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IMPACT OF EXTERNAL DEBT ON ECONOMIC GROWTH IN NIGERIA :1981-2010
The issue of linkage between external sector financing and economic growth has attracted wide debate within the context of domestic and international economies. Earlier studies have found that the inability of the developing countries to direct resources to productive use has been a disincentive to domestic capital formation resulting in repudiation to loan repayment, slow pace of economic growth, unfavourable credit terms and foreign exchange variations. Most of the studies however failed to align the contributions of each source of external financing to economic growth and also failed to use the human factor index or the standard of living as a major economic growth determinant. Against this backdrop, the study sought to assess the effect of increase in external debt on economic growth; examine the effect of loans from each of the external debt sources on economic growth; examine the effect of external debt services on per capita GDP; analyze the effect of external debt service outlets to each of the creditors on the nation’s GDP and to examine the impact of external debt stock on the standard of living of the average Nigerian. Five models were formulated in line with the five hypotheses. Variables employed alongside the models include: (1) Aggregated external debt stock and economic growth, (2) Disaggregated external debt stock and economic growth; (3) Aggregated Eternal Debt Services and Economic Growth (4) Disaggregated External Debt Services and Economic Growth and (5) Standard of living and External Debt. The study adopted ex-post-facto research design and secondary data used were sourced from CBN Statistical Bulletin, Debt Management Office and CBN Annual Report, covering 30-year time series period (1981-2010). Descriptive statistics (means, standard deviation, etc) was employed and Augumented Dicker-Fuller (ADF) analysis for unit root tests was conducted. The Johanssen Co integration test was performed to establish the nature of co integration in the models. Ordinary Least Square (OLS) regression technique was used to test the hypotheses at 5% level of significance. The results indicated that (1) Aggregate external debt stock in Nigeria does not have significant positive effect on economic growth; (2) External debt stock borrowed from the various creditors has significant effect on economic growth in Nigeria; (3) External debt services paid out over the years have insignificant and negative effect on economic growth in Nigeria; (4) Effect of external debt services to the various creditors on economic growth in Nigeria is insignificant; and (5) External debt has a negative and significant effect on the standard of living in Nigeria. The study concludes that as a developing country, Nigeria should make judicious use of all loans (borrowed) and should also enter into other forms of bilateral relationships that could reduce her foreign exchange risk and balance of payment disequilibrium. The study recommends that Nigeria’s external debt policies should be reviewed regularly; the debt service obligations should be properly aligned with the debt stock and that external debt management policies should be made to deepen the economy and also avoid the debt overhang syndrome that characterized Nigeria’s debt management initiatives before her final exit from the Paris Club. In contributing to knowledge, the study adopted modified versions of Malik (2010); Levine and Renart (1992); Karagol (2007); Adesola (2009); Uzochukwu (2011); and Fosu (2007). The study also contributed in terms of geography to knowledge by providing evidence in respect of a developing country, Nigeria.
1.1 BACKGROUND TO THE STUDY
According to Claudio (2004:4), “the history of developing nations reveal that they have been subjected to repeated economic crises with serious consequences for their long term growth prospects and that the links of these crises to the external sectors performance including the problem of external debt and its sustainability have attracted prolonged debate”. Nations have various reasons for contracting external debt with other nations and borrowing by countries occurs as a result of their inability to generate enough domestic savings to carry out productive activities (Ezeabasili, et.al., 2011). In Nigeria for instance, external debt is secured and channeled to serve as balance of payment support, project tied loans, budget deficit financing, meeting some developmental goals of the various levels of government, embarking on infrastructural development etc. Osinubi, et.al. (2006) observes that the need for government to finance its deficit budget leads to incurrence of external debt. Ezeabasili (2006), Adam (2007) and Anyanwu (1997) are of the opinion that countries borrow to supplement their domestic savings and allow the affected countries to carry out productive activities and if the borrowed funds are channeled to productive investments and the investments enjoy macroeconomic stability, they will be able not only to accelerate their economic growth but also to settle their debt obligations comfortably (Hameed, et. al., 2008). Other studies that have found relationship between debt and growth include Cohen (1995), Borenszteim (1990), Elbadawi, et.al. (1997), Patilo, et.al. (2002), Adeyemi (1996) and Indermit, et.al. (2005). The first external loan contracted in Nigeria was US $28 million in 1958. As a measure to curtail the rising debt profile, the federal government in 1978 promulgated Act No 30 of the same year limiting Federal government external loan to N5 billion. In the same year, a jumbo loan of US $1 billion was raised from the international capital market. Thereafter, the spate of borrowing increased with the entry of state governments into external loan contractual obligations coupled with fall from oil revenue (Adesola, 2009). Fajana (1990) and Olukoshi, et.al. (1990), observe that although the windfall from oil exports led to a considerable economic activities in Nigeria, it did very little to create a solid economic foundation for the country. Muttalab (1984) and Obi (2005) also observe that although the loans obtained by Nigeria from the international financial market were ear marked for specific projects, the disbursement was unrelated to the rate of progress of the projects on ground suggesting that the fund may have been looted by few government officials in collusion with or knowledge of the creditors.
The need to separate debt management from the Ministry of Finance gave rise to the creation of Debt Management Office in 2000 and the office was charged with the responsibility of managing both domestic and foreign debt in Nigeria. Again, in 2005 the government established a fiscal responsibility council and subsequently enacted a fiscal responsibility Act, 2005. These and other efforts were made to keep the nation’s debt stock at a sustainable level.
Claudio (2004) has observed that external debt sustainability is consistent with the objective to keep a debt level that promotes economic growth. Arrow, et.al. (2007) observe that sustainable development is an economic programme along which average well being of present and future generations taken together does not decline over time. As Metwally and Tamaschke (1994) and Geiger (1990) observe, capital inflows have significant impact on growth-debt relationship because when there is a considerable level of inflow of capital, economic growth will be accelerated thus less need for external borrowing. Ogunmuyiwa (2011) however argues that causality does not exist between external debt and economic growth as causation between debt and growth was found to be weak and insignificant in Nigeria. Indermit and Brian (2005) posit that large budget surplus is associated with rapid economic growth. Savvides (1992), Edo (2002), Udoka, et.al. (2010) and Bullow, Rogoff (1990) are of the opinion that debt overhang acts like a high tax margin on the country and could provide disincentive to domestic capital formation. This virus inflicted the Nigerian economy before her total exit from the strong hold of Paris and London club of creditors. Shortly before the exit, her total external debt stock was N4.9 trillion in 2004 (CBN Statistical Bulletin, 2009). In 2006, Nigeria external debt stock was $3.54 billion, in 2007 it rose marginally to $3.67 and in 2008, it further inched up to $3.72billion, dropped slightly in 2009 to $3.62billion only to rise sharply to $8.43billion in March 2010 (Mgboji, 2010). As at 30th September 2011, the external debt stock stood at $5.63 billion made up of $3.316 billion owed by federal government and $2.317 billion owed by the states (Onwuka, 2011). These figures are alarming considering the fact that the country is expected to keep a sustainable level of debt stock after her debt relief experience in 2005. As Sacks (1989), Arslanalp and Henry (2004) argue, the problem faced by debt relief countries is lack of good institutions and if the poor institutional framework is not corrected, any new debt relief initiative would not achieve the objective to promote economic growth.
It is worrisome to note that in spite of the relief package secured in 2005, the World Bank ranked Nigeria as the 87th most indebted country in the World and 139th for purchasing power parity per capita GDP and debt service ratio (ratio of debt service to export) of 1.10% as against the international threshold of 20% (World Bank Report 2010). These phenomena contrast with the expectations that the resources freed from Paris and London Club as well as further debt procured externally would add value to the economy through employment creation, promotion of quality health care delivery, increased capacity utilization, infrastructural development, reduction in inflation rate, enhanced export revenue, reduction in foreign exchange risk, all of which will translate to economic growth (Uzochukwu, 2011; Lora and Olivera, 2006).
As already observed, studies have been conducted on Nigeria external debt and economic growth nexus reflecting on related developments before and shortly after the debt relief. The findings revealed various degrees of interaction on the effect of aggregate external debt stock on gross domestic product but failed to relate these interactions (whether positive or negative) to the various sources of external debt to ascertain the extent to which each source of external borrowing contributes to economic growth in Nigeria. This information is necessary to enable the Debt Management Office (DMO) reappraise Nigeria’s bilateral relationship with her external creditors The timing and scope of the study also failed to accommodate data relating to recent developments, including the exit from both the Paris and London Club which drastically reduced the external debt stock owed by Nigeria. Also, one of the reasons for extending debt relief package to Nigeria was to free resources to improve the standard of living in Nigeria.
Bearing the above short comings in mind, this study is considered timely as it is designed to espouse on the need to disaggregate debt stock and debt services to the various creditors (Paris Club, multilateral, London Club and Bilateral creditors) to ascertain the contribution of each source to economic growth, a measure that would enable Nigeria reappraise both her bilateral trade and other associated forms of external relationship. It is also considered a necessity to accommodate data on the recent development in the management of Nigeria’s external debt and also to appreciate the need to use per capita income as a major control variable to demonstrate its response to changes in external debt per capita in recognition of the importance of human factor index as a measure of economic growth.
1.2 STATEMENT OF THE PROBLEM
The inability of a developing country like Nigeria to conserve enough domestic resources to bridge her budget gaps necessitates her continued reliance on external sector financing which is usually characterized by very stringent lending conditions, unfavorable foreign exchange variations and repudiation tendencies that cause debt overhang. This as revealed by previous studies ( Savvids, 1992; Edo, 2002; Udoka ,et. al. 2010; and Bullow, 1990) has been a disincentive to domestic capital formation and consequently lead to deprivation of adequate basic necessities to the citizens (Karagol, 2002 and Fosu, 2007). The first external loan in Nigeria was $28million and obtained in 1958. In 1978, Act No 30 was promulgated limiting external borrowing to $5billion. Following a drop in oil revenue and indiscriminate borrowing from external sources by the state governments in the 1980’s (Olukoshi, 1990), the loan stock increased in 1981 from N2331m to N298614m in 1990 and N3097384m in 2000, without significant improvement in baseline scenario like capacity utilization which rather dropped from 73% in 1981 to 40% in 1990 and 36% in 2000 with a slight increase to about 55% in 2010. This gave rise to a widespread agitation for debt rescheduling and cancellation by many indebted poor countries especially Nigeria (World Bank 2002). By 2004, the nation’s debt stock reached its peak, amounting to N4890270m. This called for a renewed effort to seek for debt relief that was obtained in 2005 and even after the total exit from the Paris and London Club in 2006, the country resorted to deficit financing in 2009 and 2010 by issuing debt instruments worth N524billion and N867billion respectively, a development that was perceived as a renewed ugly practice which according to Nwankwo (2010), made the country to pay $42billion as interest and penalty on a loan of $13.5billion in 38 years to the Paris Club.
The problem therefore exists and revolves around the scenario whether the nation’s external debt stock could have contributed significantly to economic growth in Nigeria; whether the quantum of external debt services in aggregate terms and also to the various creditors could have been made to cause improvement in the nation’s GDP and whether the external debt stock and its servicing conditions could have freed resources to improve the standard of living of the citizens in Nigeria.
The resolution of this problem is critical in order to fill the gap created by previous studies which were narrow in scope and timing and also did little in aligning the effect of aggregate and various sources of external debt and their services to economic growth. According to Levy and Chowdhurry (1993); Malik (2010); Bawada (1994) and Audu (2004), high debt stock is associated with rising debt burden and could also cause pervasive poverty rate, endemic corruption and decayed infrastructural facilities ( Okonjo-Iweala, Soludo and Muhtar, 2003) both of which could result to slow pace of economic growth. Government is expected to borrow for projects that could repay the amount borrowed and create jobs rather than borrowing to finance budget gaps that are largely recurrent (Uzamera, 2011). This has associated foreign exchange risk (Muoghalu, 2006) and stringent borrowing conditions that could contribute to the poor performance of external capital in debtor countries and thus inhibit delivery of welfare packages to the citizens (Dinneya, 2006). This causes a drop in the standard of living of the citizens (Uzochukwu, 2011).
This study is poised to largely find resolution options to the problem.
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