Year	current US$
1974	4569877.625
1975	4595236.301
1976	5901852.131
1977	10563594.82
1978	19429702.76
1979	12337546.35
1980	18834266.66
1981	16926164.63
1982	15414973.26
1983	14647280.69
1984	14507337.57
1985	12887419.7
1986	21305923.46
1987	130971176.10000001
1988	182145660.4
1989	183842422.5
1990	182263505.707288
1991	153814452.982958
1992	186858410.264127
1993	210947925.387369
1994	105553699.650822
1995	1329258289.97916
1996	1424913327.7092
1997	2074156577.78975
1998	2924032489.24988
1999	483684210.526316
2000	598947368.421053
2001	633947368.421053
2002	3826315789.47369
2003	3463789473.68421
2004	5064289473.68421
2005	5679210083.08879
2006	5596604811.25662
2007	6388479680.05251
2008	6785527867.84035
2009	6528552507.83215
2010	8628262709.43889
2011	9421625636.37394
2012	8958203380.43879
2013	8981934821.52686
2014	10192344889.7404
2015	10482814888.6086
2016	10105146887.5383
2017	9393881493.64421
2018	10915511979.3011
2019	11397960819.8498
2020	9089670217.94597
2021	8634941973.63082
2022	9068219749.86652