Year	current USD
1960	3920000
1961	3830000
1962	3830000
1963	3820000
1964	5850000
1965	6250000
1966	6500000
1967	6800000
1968	7050000
1969	7200000
1970	9900000
1971	11400000
1972	15449922.7503862
1973	15950000
1974	16900000
1975	21400000
1976	23700000
1977	31800000
1978	43100000
1979	49550000
1980	57000000
1981	60500000
1982	67000000
1983	70000000
1984	81000000
1985	94000000
1986	105500000
1987	122500000
1988	132000000
1989	138000000
1990	67120949.0318533
1991	47398089.4055866
1993	40592869.1293316
2000	52462396.8947113
2001	62951976.579615705
2002	63602176.0560809
2003	82195176.79140751
2004	60561786.6441103
2005	62589274.8097683
2006	75595918.54015839
2007	95924340.172849
2008	132428400.639025
2009	156802557.276754
2010	170186979.69314802
2011	200358405.886737
2012	212341274.31776902
2013	294917779.40816796
2014	314071900.22010297
2015	356266320.955644
2016	363272338.525911
2017	398460128.382474
2018	385320064.20647097
2019	407390257.83289796
2020	350370790.61474204
2021	438108692.039222
2022	477520416.422934