Year	current US$
1970	650000000
1971	700000000
1972	670000000
1973	710000000
1974	680000000
1975	590000000
1976	650000000
1977	1060000000
1978	1170000000
1979	1220000000
1980	1360000000
1981	4720000000
1982	5140000000
1983	5450000000
1984	5990000000
1985	6330000000
1986	8660000000
1987	8806000000
1988	9005000000
1989	10220000000
1990	13164152129.04174
1991	15231810161.88573
1992	17381319804.858078
1993	19178452965.8626
1994	21546566506.68029
1995	23487427082.43198
1996	25174488395.37223
1997	27140847001.22047
1998	28921381390.07417
1999	34960242982.15281
2000	36093622259.4351
2001	39993974003.28847
2002	42079679764.05853
2003	43185154647.11984
2004	46967530518.9199
2005	51012615579.71714
2006	54432270324.2995
2007	57783969469.232376
2008	60729056999.04614
2009	55429662290.147736
2010	56056077023.23235
2011	56627181321.57457
2012	58217531640.91504
2013	60924284085.61543
2014	63411360103.68523
2015	66020130713.40631
2016	68339579332.471214
2017	70815149041.36171
2018	74611967682.77068
2019	80544828275.94519
2020	73767199430.43488
2021	82036371597.91524
2022	89964009711.61057