Year	current US$
1970	205155891.196696
1971	232751241.995533
1972	275231723.90163
1973	336600174.9804
1974	395211082.242713
1975	446579220.545884
1976	481964260.227181
1977	592657839.475906
1978	685739931.740408
1979	835397600.046608
1980	968313499.175069
1981	924970893.887242
1982	845966871.823071
1983	743751227.566863
1984	720008800.975953
1985	699782849.214481
1986	802150524.822597
1987	888185621.359773
1988	936313770.056916
1989	959653424.82444
1990	999470820.743801
1991	980851867.125971
1992	1043412275.53599
1993	741250030.405148
1994	915252075.657634
1995	1272706963.10601
1996	1778821031.11898
1997	1929631450.34659
1998	2076486971.21598
1999	1968492534.2081
2000	1936691958.87704
2001	1947976907.8403
2002	2005587026.5632
2003	2303250538.68894
2004	2454952524.70495
2005	2712419282.82346
2006	3526364173.23811
2007	4217492369.2598
2008	4620817656.50163
2009	4671102665.44094
2010	5048911428.36641
2011	5191743417.87541
2012	6129926407.78909
2013	7021135023.74446
2014	8274853459.9321
2015	8542677786.15697
2016	9001711283.23318
2017	10230027847.5375
2018	11845352007.8803
2019	11713853703.9777
2020	11811842988.2869
2021	12096820700.7863