Year	current US$
1966	12110000
1967	9250000
1968	15520000
1969	12470000
1970	16580000
1971	18860581.9485159
1972	27988871.9452569
1973	32374267.4537116
1974	39152392.3868118
1975	39579071.4418523
1976	27977462.3357664
1977	37006128.4768429
1978	59836293.0341154
1979	66117378.520896
1980	78922214.8922177
1981	100557507.516246
1982	121601454.889382
1983	123274572.582898
1984	132516856.862091
1985	139773567.662566
1986	151712104.876885
1987	145212250.989516
1988	135462636.890904
1989	109464877.651326
1990	117535619.353829
1991	87245215.4944285
1992	139962500.721878
1993	150453016.885195
1994	195765859.521783
1995	219099891.129847
1996	289685885.665313
1997	264917582.833211
1998	365945246.439458
1999	301944450.75495
2000	472693479.363243
2001	690373663.970562
2002	668514868.724441
2003	737943173.036773
2004	579857104.076333
2005	603465289.14044
2006	636089800.395959
2007	839429792.734651
2008	738527014.772726
2009	871145394.006876
2010	833540950.447842
2011	812596875.611228
2012	839722748.012763
2013	680957827.153573
2014	632258680.138622
2015	553604323.881265
2016	431758241.990471
2017	265841633.120924
2018	533906813.039013
2019	772118649.502051
2020	1358013876.08841
2021	1672884485.22112
2022	1519660179.91512