Year	current US$
1970	121820001.18494043
1971	147250000.50850204
1972	122619999.47763975
1973	186280000.67733228
1974	280249999.3890524
1975	340730002.63795274
1976	257860002.7225911
1977	257630000.43667862
1978	410280001.0442732
1979	574759995.4251196
1980	484519997.4104763
1981	620020003.5572053
1982	463539998.76975995
1983	413089997.17235583
1984	473930004.8947334
1985	457490001.23143184
1986	605539997.6968765
1987	593669996.9917536
1988	1051040006.2501433
1989	1196320010.1852415
1990	1204200008.2507727
1991	1269960008.0251691
1992	1715650005.6385987
1993	1260810001.254082
1994	1366070004.4631958
1995	1365980001.449585
1996	1245620005.4883955
1997	1110719998.0020525
1998	1175489995.2411654
1999	1009429995.7156181
2000	732449993.1335447
2001	1351630008.2206736
2002	1468119995.8324428
2003	2066309980.8692937
2004	2575020011.425019
2005	2734379993.67714
2006	3120139994.6212764
2007	3489329971.5518956
2008	3875190001.010896
2009	3500699953.7944794
2010	3686860002.5475025
2011	3403489997.789263
2012	3631929983.377456
2013	3677349967.464804
2014	4157519968.032839
2015	3161580017.0898438
2016	3659729981.49693
2017	4101800013.303756
2018	4261980005.5027003
2019	3632029985.6066713
2020	4314979996.263982
2021	3834980010.1816645
2022	3240449999.213221