Year	current US$
1970	16812139.8203593
1971	17905489.8
1972	18451303.2
1973	20949990.6
1974	21851758.5
1975	27053027.1
1976	18694500
1977	20770200
1978	23251800
1979	33619157.7412
1980	40615859.2
1981	43637205.6000001
1982	50125261.6
1983	55896158
1984	66545472.0000001
1985	76795344.8116001
1986	83077914.4
1987	92896931.9291999
1988	98405120.0000001
1989	109983772.8
1990	113573980.8
1991	112465928.96
1992	116080598.4
1993	113671841.6
1994	119724418.4
1995	148904071.426
1996	169582446.9136
1997	237030874.56
1998	254519676.32
1999	289858976.92
2000	304403572.12
2001	311409679.08
2002	333575032.3044
2003	334374950.52
2004	341904233.32
2005	370294013.5668
2006	381613433
2007	398393799.44
2008	400751159.2
2009	377030274.56
2010	378223146.16
2011	377210164.2
2012	400931432.4
2013	392523797.2
2014	411866728
2015	439532910.8
2016	437055113.2
2017	460153096.4
2018	459896111.2
2019	482890533.2
2020	355176560
2021	401756086.4