1.China IN 2012 - 1,343,239,923 EXC IN 2050- 1,303,723,332 2.India IN 2012 - 1,205,073,612 EXC IN 2050- 1,656,553,632 3.United States IN 2012 - 313,847,465 EXC IN 2050- 439,010,253 4.Indonesia IN 2012 - 248,645,008 EXC IN 2050- 313,020,847 5.Brazil IN 2012 - 193,946,886 EXC IN 2050- 260,692,493 6.Pakistan IN 2012 - 190,291,129 EXC IN 2050- 276,428,758 7.Nigeria IN 2012 - 170,123,740 EXC IN 2050- 264,262,405 8.Bangladesh IN 2012 - 161,083,804 EXC IN 2050- 233,587,279 9.Russia IN 2012 - 142,517,670 EXC IN 2050- 109,187,353 10.Japan IN 2012 - 127,368,088 EXC IN 2050- 93,673,826