Year	current US$
1970	31869999.963790223
1971	35520000.23052098
1972	39490000.42863192
1973	45520001.031458415
1974	67459998.99134037
1975	77130000.17218299
1976	54839998.716488525
1977	61949999.736622
1978	74459998.35617839
1979	79879998.89999627
1980	88669999.19898804
1981	96689999.69027936
1982	95480001.8891692
1983	106439999.47048712
1984	149110001.91979122
1985	154330003.33234653
1986	141599998.5411762
1987	148670002.51635915
1988	194440003.96318737
1989	214509998.86915088
1990	247539996.04471025
1991	239020004.18491662
1992	240429998.05882564
1993	258600001.48229307
1994	310250001.13248825
1995	345779998.11805785
1996	283170005.3699316
1997	248700004.1790307
1998	236529993.1876362
1999	255970000.1701714
2000	225049997.74321908
2001	204410002.00063
2002	203770003.2107532
2003	287070000.7211417
2004	314900000.1363459
2005	382419994.8161838
2006	699449982.0154165
2007	875069994.9562558
2008	836370006.5836307
2009	633840014.7203361
2010	747530014.5056098
2011	930859987.3818458
2012	1132620024.6810923
2013	968470018.7239798
2014	821220005.8903549
2015	661199988.985434
2016	424560008.87975127
2017	412120000.1556427
2018	484870001.18382263
2019	391350005.0939621
2020	367519994.5643547
2021	585339986.1790243
2022	492239992.9687383