Year	current US$
1970	5129999.8406320745
1971	2339999.942108988
1972	6709999.799728391
1973	10089999.921619887
1974	12749999.638646867
1975	24100000.113248862
1976	15399999.94635584
1977	20120000.36984685
1978	12680000.133812428
1979	17660000.08583069
1980	17919999.629259124
1981	10890000.147745015
1982	12069999.838247893
1983	14870000.261813413
1984	6669999.929144971
1985	9159999.726340178
1986	18200000.012293436
1987	25309999.86268584
1988	50950000.52452083
1989	17899999.75264072
1990	58400000.54240235
1991	63290000.20027157
1992	55409999.39292668
1993	48650000.22388995
1994	58710001.198574886
1995	82509999.82841317
1996	100009998.06821351
1997	87679998.59899275
1998	46670000.333338924
1999	55789999.47011468
2000	67309999.91297719
2001	46399999.59617855
2002	57600000.418722674
2003	74860000.34213069
2004	108169998.98850916
2005	113780000.5972386
2006	407300000.51856035
2007	183100002.16215858
2008	197219999.9298901
2009	190290000.03077087
2010	180229995.79831958
2011	304549997.3297119
2012	241439999.36431652
2013	285960000.4032254
2014	338870004.0280819
2015	243080001.80125242
2016	282310003.1465292
2017	328539999.0677833
2018	408519997.67124593
2019	352000005.543232
2020	400690002.437681
2021	484689996.9875816
2022	334590002.16424465