Year	current US$
1975	5719583.035
1976	42314683.556
1977	287363158.7898
1978	380752520.19400007
1979	572811033.485
1980	854311248.6228
1981	803673139.4670001
1982	731786120.063
1983	709177514.921
1984	595071591.3105999
1985	545894852.7809999
1986	424251545.6983
1987	314583688.97099996
1988	358772471.009
1989	284321503.03709996
1990	265129574.89432123
1991	264601791.86843187
1992	287498777.1916646
1993	215137754.6388849
1994	160214907.2638079
1995	119098047.13034363
1996	143220973.4887848
1997	179873791.2145552
1998	196028941.14426202
1999	168706541.9160623
2000	91759668.01854572
2001	105381053.33758482
2002	169651759.34179315
2003	228930131.1175022
2004	309222229.58081144
2005	607313121.742615
2006	739592715.9636835
2007	930557547.7780291
2008	1153892372.9444225
2009	1210544694.1254106
2010	1076270281.890266
2011	1379593886.395874
2012	1349330924.312159
2013	1528188970.670069
2014	1562334419.9207046
2015	2155229228.9773717
2016	2071235308.1665022
2017	1390631234.231294
2018	1099254034.7136514
2019	1231609403.92201
2020	1262817670.0586684
2021	1493756913.1061232
2022	1453873161.1812959