2004 Least developed countries 1810.232208 2004 Low-middle income 941.933214 2004 Other low-income 576.938409 2004 Unallocated by income 613.059722 2004 Upper-middle income 139.258977 2005 Least developed countries 1615.175974 2005 Low-middle income 1989.222389 2005 Other low-income 2579.362781 2005 Unallocated by income 784.520996 2005 Upper-middle income 215.845205 2006 Least developed countries 2126.330572 2006 Low-middle income 1093.182424 2006 Other low-income 3843.980986 2006 Unallocated by income 896.041364 2006 Upper-middle income 299.042951 2007 Least developed countries 2310.258434 2007 Low-middle income 1117.555023 2007 Other low-income 1050.663121 2007 Unallocated by income 2570.347965 2007 Upper-middle income 307.162139 2008 Least developed countries 2555.576995 2008 Low-middle income 1926.150763 2008 Other low-income 938.855045 2008 Unallocated by income 2139.181754 2008 Upper-middle income 287.654764 2009 Least developed countries 2629.407732 2009 Low-middle income 1170.577788 2009 Other low-income 937.290722 2009 Unallocated by income 2374.004852 2009 Upper-middle income 248.812184