Year	current US$
1970	149333333.33333334
1971	162583333.33333334
1972	201769230.76923078
1973	225949999.99999997
1974	327500000
1975	452749999.99999994
1976	534249999.99999994
1977	620700000
1978	819449999.9999999
1979	870999999.9999999
1980	752979610.496712
1981	934582122.1228199
1982	839330602.6117579
1983	678358001.0717673
1984	936308970.0108737
1985	777747604.4136182
1986	529828343.09172726
1987	525473379.2185366
1988	583952252.5765431
1989	565507342.4322255
1990	611294834.1607175
1991	773919401.3977515
1992	920829366.9787878
1993	955652305.0078979
1994	888299945.6554319
1995	1043101470.6868804
1996	1196557766.3868685
1997	1503429161.6437564
1998	1967443290.3888166
1999	1582225490.7088423
2000	1502164633.1503854
2001	1133850599.3037298
2002	1237180516.0390515
2003	1023548840.2328869
2004	1025363923.891129
2005	1240511937.5477152
2006	1637233582.1844704
2007	2117532123.8860843
2008	2876098752.735614
2009	2857502535.612536
2010	3256400424.8740892
2011	4544764105.6704645
2012	4973493024.602026
2013	5843695079.59479
2014	6923276541.244573
2015	7052492040.520984
2016	7015795123.01013
2017	7977471302.460202
2018	8124443039.073806
2019	7759993820.549928
2020	5704050072.3589
2021	6719662112.879884
2022	7411898813.314037
2023	8037393072.928003