Year	current US$
1970	147300000.25033948
1971	140599999.4277954
1972	201990000.72479242
1973	221809999.46594244
1974	304389997.959137
1975	385000004.64916223
1976	387099995.80681306
1977	369499999.82118607
1978	457069997.9066848
1979	541670001.5068053
1980	725999994.3077564
1981	688869991.898537
1982	651849994.0633775
1983	614639996.7372415
1984	737759988.546371
1985	671729997.8733065
1986	876350001.9907949
1987	1116430004.7755253
1988	1255929987.967015
1989	1430999992.8474429
1990	1947699989.7360804
1991	1810880001.187324
1992	2082039968.0733685
1993	2197639994.740485
1994	2353989977.5981903
1995	1944009959.6977232
1996	1607669987.231494
1997	1208069989.6812437
1998	970470005.8102605
1999	968040002.3739784
2000	824070001.7176569
2001	596680003.8814546
2002	1160649980.664253
2003	1042829995.8705902
2004	1486769990.1759634
2005	3158060007.423165
2006	3394250019.3119025
2007	1654969986.7963781
2008	1503080013.483763
2009	2134270064.324141
2010	2170310026.437045
2011	1489430018.931627
2012	2301850009.199232
2013	1154779998.9581113
2014	1257419986.4268308
2015	969530004.6801568
2016	877109998.427331
2017	1141970003.6793947
2018	1662960034.0724003
2019	1819359991.6025996