Year	current US$
1970	13929999.804124232
1971	17410000.190138824
1972	28209999.72708524
1973	38220000.40113926
1974	65540000.10713932
1975	87350000.29392546
1976	94050000.71600077
1977	139580000.20124012
1978	172209999.9599158
1979	219329999.52137476
1980	240240001.28731138
1981	206939997.76244172
1982	274629999.78661555
1983	271629996.7691301
1984	248219996.95152038
1985	269669998.53029853
1986	389859999.42198384
1987	402800001.3474375
1988	459990004.77045774
1989	425019996.4549395
1990	592789998.1066586
1991	575179996.8406559
1992	668449997.0786275
1993	516520002.63892114
1994	661189999.7256697
1995	674680004.5892597
1996	712480003.0514596
1997	689560001.3118236
1998	653199999.788776
1999	707050006.2368811
2000	635090002.6410819
2001	628609998.0454892
2002	774999997.3904344
2003	1008109998.134896
2004	1002150005.0220639
2005	1277760011.6860123
2006	1240060003.243386
2007	1636799985.729158
2008	1614410005.8116024
2009	1369429997.5205214
2010	1612409985.8198316
2011	1703239990.7819915
2012	1603819996.8542902
2013	2303529974.8592086
2014	1711419997.831807
2015	1349619992.93603
2016	1333939995.1398375
2017	1395849999.591708
2018	1402489994.041622
2019	1391939996.778965
2020	1291319998.6778197
2021	1319320001.1458244
2022	1880409981.5599618