Year	current US$
1964	17200000.762939498
1965	9600000.38146973
1966	18000000
1967	17100000.3814697
1968	14800000.1907349
1969	16200000.7629395
1970	17200000.762939498
1971	9899999.61853027
1972	25979999.5422363
1973	25090000.1525879
1974	33779998.779296905
1975	37830001.8310547
1976	45479999.5422363
1977	42599998.4741211
1978	49319999.6948242
1979	68419998.1689453
1980	94650001.5258789
1981	73339996.3378906
1982	93519996.6430664
1983	55599998.4741211
1984	69180000.3051758
1985	57029998.779296905
1986	65629997.253418
1987	59880001.0681152
1988	128100006.103516
1989	95639999.3896484
1990	171759994.506836
1991	175720001.220703
1992	407269989.013672
1993	425709991.455078
1994	308549987.792969
1995	265160003.662109
1996	176009994.506836
1997	199839996.33789098
1998	152770004.272461
1999	134800003.05175802
2000	86220001.2207031
2001	59279998.779296905
2002	119010002.13623
2003	290589996.33789104
2004	129130004.882813
2005	16780000.6866455
2006	243610000.61035198
2007	596229980.46875
2008	113190002.441406
2009	90589996.3378906
2010	82080001.8310547
2011	148929992.67578098
2012	88510002.1362305
2013	172039993.28613302
2014	167110000.61035198
2015	162229995.727539
2016	237889999.38964802
2017	271940002.441406
2018	333890014.64843804
2019	374279998.779297
2020	158119995.117188
2021	135740005.493164
2022	230130004.882813