Year	current US$
1970	8319999.983534219
1971	7359999.809414145
1972	8700000.012293456
1973	13349999.861791732
1974	18830000.04664063
1975	35080000.452697285
1976	44179999.61413439
1977	69189999.68469147
1978	93550001.88760462
1979	88090001.75818796
1980	102819997.92158608
1981	115730003.14272937
1982	76230001.08450645
1983	65759999.48568641
1984	71259999.08894302
1985	74180000.03136685
1986	108239999.59044158
1987	105280000.43518849
1988	147510000.37416798
1989	154770001.2587011
1990	183160000.23111713
1991	130400000.22575256
1992	176390001.43110752
1993	164189999.92310998
1994	161239998.6777455
1995	236120000.87834898
1996	192980000.50894925
1997	170279997.0544875
1998	262290001.6959758
1999	173569998.3015658
2000	214309997.2549826
2001	306100000.5062671
2002	260520000.3068894
2003	321839999.51183784
2004	281569996.83938915
2005	294009997.57461256
2006	234839999.07597882
2007	164980000.68217522
2008	180990000.2051145
2009	142489999.83072275
2010	90259999.04423952
2011	67459999.570623
2012	32609999.934211425
2013	26250000.625848807
2014	13799999.84987079
2015	42519998.45355749
2016	61800000.581890404
2017	38310000.68783758
2018	105320002.07901002
2019	44759999.55646695
2020	41560000.39726492
2021	49689999.7107685
2022	47139999.94471674