Year	current US$
1980	1834174451.53886
1981	1853068811.1547
1982	1726169064.08185
1983	1854520601.79611
1984	2002032761.63643
1985	1781775407.97088
1986	1966836854.26264
1987	2207841353.75849
1988	2588861091.55171
1989	2533174889.51903
1990	2306837984.01571
1991	2796828804.1072
1992	2873546989.90825
1993	3170064868.11448
1994	3643464963.98466
1995	2936520297.71623
1996	3362238045.11835
1997	3703139460.86767
1998	2815116732.86197
1999	2482255094.69398
2000	2390043852.49662
2001	2218586974.64989
2002	2112313906.97864
2003	2287316863.71535
2004	2476238385.46112
2005	3112551058.21404
2006	5403321905.37977
2007	6608472870.38946
2008	7972962330.4175
2009	8338416595.29886
2010	9592477405.37384
2011	12112819865.6926
2012	16795014153.9821
2013	16734420326.4654
2014	19093098796.1044
2015	17539612760.6181
2016	16991954425.7135
2017	18227358088.3117
2018	19255880962.856
2019	19309314572.8762
2020	19538494315.1476
2021	18341899498.9312