Year	current US$
1970	5228668.89318284
1971	6683160.28598554
1972	8014969.91420384
1973	10604014.6599575
1974	12873871.2011066
1975	17501015.4550009
1976	19993620.7798618
1977	23516473.8009602
1978	29725844.9793727
1979	35174881.2325583
1980	44342397.5340824
1981	40572030.8666486
1982	37379930.1253122
1983	38696762.7465191
1984	35176901.2811215
1985	41998478.0197942
1986	61523834.9919159
1987	80498874.5182604
1988	92049079.8698503
1989	95493377.1789537
1990	103952472.048059
1991	103690147.977343
1992	105636328.945555
1993	94170226.0165774
1994	102342540.635457
1995	135288323.7874
1996	134207651.462695
1997	119852851.369627
1998	129554847.591191
1999	127774085.682646
2000	120080389.332952
2001	121739180.039407
2002	131280296.512061
2003	173930070.248414
2004	204163696.055374
2005	204080706.178563
2006	226276667.906023
2007	249084843.743468
2008	287725015.16727
2009	282444154.70986
2010	299704658.940595
2011	321659713.487592
2012	309610160.522103
2013	307998471.695917
2014	321219926.94772
2015	290643171.207547
2016	322254095.729714
2017	331649329.610039
2018	366893624.26867
2019	349555502.343498
2020	381370175.08146