Year	current US$
1970	2000658161.51381
1971	2203934404.91295
1972	2623715264.68256
1973	3319082901.1598
1974	4191072939.49544
1975	5092892502.91294
1976	5723244886.61604
1977	6906493912.65597
1978	7972836349.26013
1979	8924981734.9387
1980	10247408490.0954
1981	10024392371.0774
1982	10253486208.7198
1983	10142261937.316
1984	9989217668.29065
1985	10551458611.5984
1986	13750524025.1829
1987	17172838592.8609
1988	19469541201.1518
1989	19383735250.0485
1990	22110005277.6574
1991	22094124539.0106
1992	23805294071.9048
1993	21892135720.6158
1994	22625963499.8295
1995	26493875485.3267
1996	27388756237.426
1997	26338960043.6224
1998	26288982247.2466
1999	27228433686.5407
2000	25815628627.7967
2001	26640012461.3579
2002	30677371680.8758
2003	35113697353.6404
2004	38639627348.5467
2005	42740706250.1631
2006	46496499458.8786
2007	56538888035.1322
2008	65070212776.75
2009	63084299426.5114
2010	68500923748.2739
2011	78029909311.6593
2012	79261882253.398
2013	82548255322.0452
2014	82979952390.9786
2015	68896641504.9614
2016	67769047615.727
2017	70463912972.8192
2018	75647832777.5395
2019	73949886379.4627
2020	74497282959.7991
2021	86139580925.4202