Year	current US$
1970	4740059.13826581
1971	10397036.6955854
1972	12094521.6133983
1973	14519612.9016893
1974	20682362.6394836
1975	22588344.5659514
1976	22697260.172531
1977	28183171.7100217
1978	50643426.7519706
1979	53068536.0052764
1980	59211483.4655122
1981	52419892.6388733
1982	45047096.0937443
1983	41595523.6913358
1984	38050452.369308
1985	36900825.674615
1986	46849332.6114281
1987	55223888.6025864
1988	65216309.1527811
1989	64380657.9367221
1990	75103296.3478937
1991	87930964.0380771
1992	93267618.0372798
1993	61732420.7653207
1994	47616497.1194991
1995	54389093.539316
1996	60439924.3060927
1997	61571026.5446334
1998	51096460.881589
1999	63831466.5714176
2000	61585350.5194817
2001	56523816.4502703
2002	60993642.084683
2003	80345572.099892
2004	79036193.0992077
2005	76147541.8883795
2006	75891173.7862769
2007	95026370.2702086
2008	124401218.595695
2009	152214374.241569
2010	154630988.317165
2011	197511356.903002
2012	187757327.977972
2013	221257769.381044
2014	243996494.934171
2015	208206850.253346
2016	216971803.941222
2017	228587245.263227
2018	254696741.300754
2019	258660208.253613
2020	271116516.309183
2021	301269614.569197