face substantial population declines. These changes will imply a need for the association to carefully examine its financial models and business operations to determine an appropriate strategy going forward. The center recommended that the World Bank leadership begin discussing the long-term future of the IDA. Membership The IDA has 173 member countries which pay contributions every three years as replenishments of its capital. On December 12, 2008, Samoa joined UNIDO as its 173rd member. The IDA lends to 75 borrowing countries, over half of which (39) are in Africa. Membership in the IDA is available only to countries who are members of the World Bank, particularly the IBRD. Throughout its lifetime, 44 borrowing countries have graduated from the association, although 9 of these countries have relapsed as borrowers after not sustaining their graduate status. To be eligible for support from the IDA, countries are assessed by their poverty and their lack of creditworthiness for commercial and IBRD borrowing. The association assesses countries based on their per capita income, lack of access to private capital markets, and policy performance in implementing pro-growth and anti-poverty economic or social reforms. , to borrow from the IDA's concessional lending programs, a country's gross national income (GNI) per capita must not exceed $1,145. Countries that graduated from IDA lending The following countries have graduated from their eligibility for IDA lending. (2008) (2014) (2011) (1974) (1961) (1999) (1962) (1962) (1973) (1974) (1999) - graduated in FY 81, relapsed in FY 91, graduated again in FY 99 (1977) (1999) (2014) (2008) - graduated in FY 80, relapsed in FY 98, 99, graduated in FY 08 (1978) (1975) (2008) (1975) (2002) (1977) (1993) - graduated in FY 79, relapsed in FY 91, graduated in FY 93 (1994) (2007) (1973) (1975) (1979) (1977) (1974) Countries relapsed to IDA lending The following countries have relapsed to their eligibility for IDA lending and have not yet re-graduated or have instead become partially eligible (also referred to as a blend country). (1994) (1994) (1992) (1991) (1991) (1989) (2003, partially eligible) (2017) (1992) Replenishment rounds The IDA is a unique part of the World Bank as it requires continuous replenishment of its resources. Member countries replenish its funds through contributions in addition to supplementary funds provided by the International Bank for Reconstruction and Development and the International Finance Corporation (IFC). Whereas the IBRD acquires most of its funds by raising capital on international