Year	current US$
1970	5025053.92879513
1971	2068618.54813521
1972	1929897.16006632
1973	14328771.0362146
1974	43550791.0825097
1975	22584194.7726998
1976	11316112.7467363
1977	30157040.1036929
1978	10739941.7396281
1979	61317438.1209784
1980	33515489.7062128
1981	14558092.0649496
1982	23491581.1900999
1983	23386977.7601262
1984	26037253.1581455
1985	41370074.6562298
1986	6436833.71150604
1987	5486578.68412492
1988	241732233.953215
1989	19072754.5924998
1990	15211021.1122124
1991	16035537.4229499
1992	18791173.8798789
1993	13389281.1343954
1994	45148729.3533408
1995	47318547.0598966
1996	32064563.2934502
1997	34086076.8127305
1998	14086992.2728289
1999	12705391.4486357
2000	9993716.94695733
2001	833602.563802234
2002	1287802.47454668
2003	3364927.90640149
2004	62567275.9035632
2005	104749625.404191
2006	211827231.263556
2007	304783915.835664
2008	708189118.629271
2009	138503788.939814
2010	949116762.387206
2011	1204014517.8484
2012	251343357.430755
2013	217086252.772423
2014	174373574.1154
2015	138780151.108879
2016	154285318.048334
2017	196360554.597154
2018	225955970.265507
2019	125386735.496827
2020	93204501.6125644
2021	173465861.025147