Year	current US$
1970	3035558.54910417
1971	2685035.80425006
1972	3075765.60455525
1973	4935378.26717006
1974	5604353.74828798
1975	7583348.29020052
1976	7033099.92728179
1977	11979599.0248242
1978	12425782.1665634
1979	12426284.4646081
1980	14965650.5787058
1981	13036539.8739306
1982	17529244.0816237
1983	11938608.1252656
1984	10785428.8674435
1985	8514138.53507254
1986	12987008.1274701
1987	12838126.8074843
1988	13677993.0490566
1989	14039561.3408061
1990	17973230.8621463
1991	17449310.5211519
1992	17912655.5887935
1993	16319340.3356125
1994	18568814.2215046
1995	25992238.7800295
1996	25421206.701545
1997	23562713.6005146
1998	24166433.5660595
1999	17655162.8222259
2000	17576947.4724055
2001	16978754.8480759
2002	20298076.7566494
2003	29758077.5842229
2004	24574934.6020136
2005	26835150.5588948
2006	28242878.2046905
2007	38268270.8066889
2008	48437855.0251518
2009	46564356.0860835
2010	42740132.3215509
2011	48475552.5006219
2012	55153089.2113831
2013	57304479.7219167
2014	60950149.7317833
2015	61090348.7414538
2016	63900837.9736104
2017	64977954.1824012
2018	49953919.2621761
2019	46007983.1961451
2020	49210655.5814819
2021	52121863.8006821