2004 Least developed countries 998.807057 2004 Low-middle income 2600.034500 2004 Other low-income 322.295613 2004 Unallocated by income 815.568555 2004 Upper-middle income 467.523398 2005 Least developed countries 1033.793189 2005 Low-middle income 4689.158762 2005 Other low-income 1811.608812 2005 Unallocated by income 981.548571 2005 Upper-middle income 506.406761 2006 Least developed countries 1362.823710 2006 Low-middle income 2816.780099 2006 Other low-income 2241.790810 2006 Unallocated by income 1588.789880 2006 Upper-middle income 637.887650 2007 Least developed countries 1283.815493 2007 Low-middle income 5397.814932 2007 Other low-income 418.533480 2007 Unallocated by income 1586.520697 2007 Upper-middle income 658.932380 2008 Least developed countries 1905.619768 2008 Low-middle income 5230.803035 2008 Other low-income 544.810813 2008 Unallocated by income 2056.301147 2008 Upper-middle income 1305.524619 2009 Least developed countries 1654.280940 2009 Low-middle income 2959.514691 2009 Other low-income 558.777589 2009 Unallocated by income 2325.642632 2009 Upper-middle income 861.302177