The five Regional Economic Outlooks published biannually by the IMF cover Asia and Pacific, Europe, the Middle East and Central Asia, Sub-Saharan Africa, and the Western Hemisphere. In each volume, recent economic developments and prospects for the region are discussed as a whole, as well as for specific countries. The reports include key data for countries in the region. Each report focuses on policy developments that have affected economic performance in the region, and discusses key challenges faced by policymakers. The near-term outlook, key risks, and their related policy challenges are analyzed throughout the reports, and current issues are explored, such as when and how to withdraw public interventions in financial systems globally while maintaining a still-fragile economic recovery.These indispensable surveys are the product of comprehensive intradepartmental reviews of economic developments that draw primarily on information the IMF staff gathers through consultation with member countries.

This first, annual issue of Regional Economic Outlook: Sub-Saharan Africa analyzes economic, trade, and institutional issues in 2004, and prospects in 2005, for the 42 countries covered by the IMF African Department (for data reasons, Eritrea and Liberia are excluded). Topics examined include responses to exogenous shocks, growth performance and growth-enhancing policies, and the effectiveness of regional trade arrangements. Detailed aggregate and country data (as of February 24, 2005) are provided in the appendix.

The five Regional Economic Outlooks published biannually by the IMF cover Asia and Pacific, Europe, the Middle East and Central Asia, Sub-Saharan Africa, and the Western Hemisphere. In each volume, recent economic developments and prospects for the region are discussed as a whole, as well as for specific countries. The reports include key data for countries in the region. Each report focuses on policy developments that have affected economic performance in the region, and discusses key challenges faced by policymakers. The near-term outlook, key risks, and their related policy challenges are analyzed throughout the reports, and current issues are explored, such as when and how to withdraw public interventions in financial systems globally while maintaining a still-fragile economic recovery.These indispensable surveys are the product of comprehensive intradepartmental reviews of economic developments that draw primarily on information the IMF staff gathers through consultation with member countries.

The multiple indicator-multiple cause (MIMIC) method is a well-established tool for measuring informal economic activity. However, it has been criticized because GDP is used both as a cause and indicator variable. To address this issue, this paper applies for the first time the light intensity approach (instead of GDP). It also uses the Predictive Mean Matching (PMM) method to estimate the size of the informal economy for Sub-Saharan African countries over 24 years. Results suggest that informal economy in Sub-Saharan Africa remains among the largest in the world, although this share has been very gradually declining. It also finds significant heterogeneity, with informality ranging from a low of 20 to 25 percent in Mauritius, South Africa and Namibia to a high of 50 to 65 percent in Benin, Tanzania and Nigeria.

Prepared by the Policy Wing of the IMF African Department, and published twice a year in English and French, Regional Economic Outlook: Sub-Saharan Africa analyzes economic performance and short-term prospects of the 44 countries covered by the Department. Topics examined in recent volumes include responses to exogenous shocks, growth performance and growth-enhancing policies, the effectiveness of regional trade arrangements, macroeconomic implications of scaled-up aid, financial sector development, and fiscal decentralization. Detailed country data, grouped by oil-exporting and -importing countries and by subregion, are provided in an appendix and a statistical appendix, and a list of relevant publications by the African Department is included.

This first, annual issue of Regional Economic Outlook: Sub-Saharan Africa analyzes economic, trade, and institutional issues in 2004, and prospects in 2005, for the 42 countries covered by the IMF African Department (for data reasons, Eritrea and Liberia are excluded). Topics examined include responses to exogenous shocks, growth performance and growth-enhancing policies, and the effectiveness of regional trade arrangements. Detailed aggregate and country data (as of February 24, 2005) are provided in the appendix.

The world economy is experiencing a very strong but uneven recovery, with many emerging market and developing economies facing obstacles to vaccination. The global outlook remains uncertain, with major risks around the path of the pandemic and the possibility of financial stress amid large debt loads. Policy makers face a difficult balancing act as they seek to nurture the recovery while safeguarding price stability and fiscal sustainability. A comprehensive set of policies will be required to promote a strong recovery that mitigates inequality and enhances environmental sustainability, ultimately putting economies on a path of green, resilient, and inclusive development. Prominent among the necessary policies are efforts to lower trade costs so that trade can once again become a robust engine of growth. This year marks the 30th anniversary of the Global Economic Prospects. The Global Economic Prospects is a World Bank Group Flagship Report that examines global economic developments and prospects, with a special focus on emerging market and developing economies, on a semiannual basis (in January and June). Each edition includes analytical pieces on topical policy challenges faced by these economies.

3. Investing in people.

The paper investigates empirically the determinants of economic growth for a large sample of sub-Saharan African countries during 1981-92. The results indicate that (i) an increase in private investment has a relatively large positive impact on per capita growth; (ii) growth is stimulated by public policies that lower the budget deficit in relation to GDP (without reducing government investment), reduce the rate of inflation, maintain external competitiveness, promote structural reforms, encourage human capital development, and slow population growth; and (iii) convergence of per capita income occurs after controlling for human capital development and public policies.

The IMF Working Papers series is designed to make IMF staff research available to a wide audience. Almost 300 Working Papers are released each year, covering a wide range of theoretical and analytical topics, including balance of payments, monetary and fiscal issues, global liquidity, and national and international economic developments.