Year	current US$
1970	13799999.654293042
1971	12779999.874532213
1972	8900000.032037506
1973	12750000.346452044
1974	17720000.002533197
1975	23980000.782757998
1976	25980000.97274776
1977	25979999.54223636
1978	30230000.22768971
1979	40999999.98509886
1980	61040000.05125999
1981	43769999.65310095
1982	42629999.65995548
1983	38910000.03367655
1984	40400000.81807369
1985	51230000.376701385
1986	41510000.50455332
1987	72160000.20503996
1988	65919999.748468354
1989	70660000.91470785
1990	78689998.9489466
1991	79090002.00033194
1992	106390002.35497946
1993	70700000.43697655
1994	64840000.9833277
1995	72359999.65108934
1996	72999997.8821725
1997	46159999.37057496
1998	57739999.800920546
1999	35010000.38161876
2000	38599999.68111509
2001	27780000.658705823
2002	32090000.480413396
2003	52599999.83012676
2004	70370000.51885837
2005	81839999.10950665
2006	101769998.28778209
2007	165189997.06208706
2008	110359998.81103638
2009	117900000.8199364
2010	128279997.95228244
2011	144680000.2343953
2012	136959996.57921496
2013	135280003.061518
2014	133919996.48138879
2015	113010000.26613477
2016	118729998.46003947
2017	139799996.1767346
2018	138659999.4990975
2019	131060000.80332151
2020	137170000.15079978
2021	155779999.07918283
2022	129330001.09158468