Year	current US$
1975	189925549.2363175
1976	227852488.533919
1977	278625000.116094
1978	340291666.808455
1979	454791666.8561641
1980	621791666.9257474
1981	659458333.608108
1982	849541667.0206431
1983	881416667.0339223
1984	836375000.0000002
1985	711469387.755101
1986	601722222.222222
1987	481333333.3333336
1988	444721951.21951205
1989	422917647.0588236
1990	460282352.9411769
1991	511764705.8823532
1992	544752941.1764718
1993	454617090.9514498
1994	423853168.4274702
1995	223242363.592675
1996	198515725.4035103
1997	231665790.01318792
1998	234809113.4007029
1999	253100000
2000	364000019.2598812
2001	339100018.1340289
2002	340300000
2003	338500000
2004	315700000
2005	474700000
2006	310700000
2007	326900000
2008	271400000
2009	334800000
2010	371000000
2011	2428229574.330223
2012	2556025580.0634885
2013	2627758615.207437
2014	2718504277.089063
2015	2866495483.4545445
2016	2689061993.289558
2017	3053088686.9039903
2018	2489524345.558749
2019	1887091595.951907
2020	1714496669.9685142
2021	2228888112.4877353
2022	3167088586.4950285