Year	current US$
1970	29959999.38994644
1971	34409999.62761996
1972	65890000.477433264
1973	74210000.68634759
1974	92310001.21310362
1975	169050001.5504658
1976	161610000.8934735
1977	213909998.5063076
1978	219960001.31964678
1979	350710004.8363209
1980	346140003.7407874
1981	294839997.5858629
1982	302409993.1903183
1983	276059999.4137882
1984	247400002.75149927
1985	272579996.31576246
1986	397089999.51928866
1987	402289996.46008
1988	515639998.2403958
1989	506530002.05568975
1990	605900003.5785145
1991	735360006.3025953
1992	670129998.3076751
1993	530559997.5585938
1994	446570002.07714736
1995	446870002.74844456
1996	513250000.2514571
1997	423349998.2804058
1998	366310001.0789932
1999	384279999.2151557
2000	456410001.34497875
2001	414130000.8986146
2002	428029998.8370389
2003	711519997.4440037
2004	733549995.491281
2005	857120003.2290072
2006	924179993.1246783
2007	1015070000.095292
2008	1096659996.0513415
2009	1008970009.7683818
2010	1017080007.392913
2011	1395649996.7128046
2012	1138569987.5354764
2013	1284220001.658424
2014	1200799995.3106046
2015	1011559999.8105323
2016	1022670001.5366073
2017	1242839991.2472806
2018	1410420000.7505715
2019	1300269998.2784686
2020	1328999998.766929
2021	1613589990.3140955
2022	1246869999.451563