Year	current US$
1981	175217767.32181
1982	123182171.980676
1983	153978556.521739
1984	137305352.801932
1985	188954007.729469
1986	176711804.347826
1987	199120126.666667
1988	206042581.15942
1989	227924934.299516
1990	242162393.236716
1991	267808242.512078
1992	285376963.000351
1993	165954182.760962
1994	143817664.292013
1995	303643635.852329
1996	238122057.009006
1997	237783445.525052
1998	265634772.303676
1999	175911891.943708
2000	198828999.100404
2001	194685653.007997
2002	181674937.449518
2003	226348020.931761
2004	298002638.575318
2005	404965356.876185
2006	547204382.591667
2007	727734656.237206
2008	1034717674.54565
2009	1017226179.76389
2010	882837017.876037
2011	1166927746.93548
2012	1573008855.8215
2013	1369193179.71661
2014	1579024793.2398
2015	1977699777.39198
2016	2276755204.45089
2017	2499076879.79193
2018	2579223080.16095
2019	2930663014.99787
2020	3291054972.80635
2021	3403852722.00242