Year	current US$
1980	158817459.883402
1981	180303654.432976
1982	174636462.004924
1983	163800112.409798
1984	162045326.925886
1985	148927714.518624
1986	131934212.705945
1987	137793142.929242
1988	156830994.173077
1989	154060409.522681
1990	196980012.740875
1991	204433223.181099
1992	242160538.428139
1993	277797710.06184
1994	372280658.457884
1995	425768161.445426
1996	462595141.627124
1997	476184178.91493
1998	410001363.654331
1999	426539366.168189
2000	381679813.870116
2001	374868324.793916
2002	311253956.086861
2003	382177670.888978
2004	432839682.489005
2005	503386422.142107
2006	555565358.414945
2007	606686951.947114
2008	658203517.535181
2009	681789327.245564
2010	775140217.796207
2011	870355030.499194
2012	994282594.159119
2013	1169175418.71871
2014	1203350922.60793
2015	1178042357.38067
2016	1226274110.70919
2017	1313702710.93922
2018	1457210983.41253
2019	1467036932.8664
2020	1437751517.25215
2021	1505399373.49303