Year	current US$
1970	15637349.2477272
1971	14815794.1579669
1972	15641833.1458146
1973	16932085.4382493
1974	16471607.0831941
1975	20025385.2504742
1976	18976416.2375038
1977	23646162.9561858
1978	26108941.0716275
1979	31239560.4790419
1980	39799232.6436044
1981	35391212.6998225
1982	34345867.1875
1983	37893326.7149805
1984	32688728.2801004
1985	35064510.8894582
1986	43905638.8464059
1987	53630520.1292246
1988	65540375.3730376
1989	73656162.601626
1990	93103752.8029177
1991	102192609.561753
1992	126658931.215507
1993	132117713.215342
1994	134440203.112575
1995	185069933.935362
1996	188866875.666168
1997	187540331.149848
1998	146915895.919413
1999	158651840.111124
2000	152565014.792755
2001	164229185.554627
2002	184213786.258786
2003	235510714.919769
2004	278807623.318385
2005	318492016.415866
2006	367417210.513108
2007	465421501.231864
2008	494047842.976417
2009	450636580.022228
2010	560541726.633965
2011	739871406.1804
2012	652778604.651163
2013	682019005.896429
2014	751183872.188419
2015	481483228.136004
2016	502326240.543987
2017	564770387.444275
2018	662649787.317209
2019	683691660.358713
2020	640051263.967922
2021	761149563.119098