Year	current US$
1964	21265849.673202615
1965	20658263.30532213
1966	21078431.37254902
1967	21339779.005524863
1968	20108043.217286915
1969	22208883.55342137
1970	24009603.841536615
1971	25030084.235860407
1972	27840199.750312112
1973	31617647.05882353
1974	34269005.847953215
1975	34955752.21238938
1976	31311769.991015274
1977	36867364.746945895
1978	49665711.556829035
1979	53358561.96783349
1980	53523809.52380953
1981	66393442.622950815
1982	84140435.83535108
1983	64535809.018567644
1984	59960159.3625498
1987	24915900.478806216
1988	29803930.61450452
1989	51729722.63554746
1990	28089219.919971477
1991	39302404.334575005
1992	46365638.76651982
1993	72988546.2555066
1994	85679222.77143344
1995	75190677.96610169
1996	76135549.03877485
1997	40727457.972491086
1998	25752110.514198
1999	19863651.47988028
2000	21274795.659863297
2001	38681552.7137247
2002	40422772.748928055
2003	38233272.28587248
2004	37616184.79991116
2005	41077447.71919042
2006	49410093.28780864
2007	53321702.567277215
2008	61056476.32160161
2009	52220459.88214966
2010	56132155.9835167
2011	66331789.8942371
2012	76707731.37804043
2013	80754017.48505884
2014	76881488.22388609
2015	73796296.2962963
2016	74319627.85018617
2017	73432594.40942784
2018	85750448.3314405
2019	79556872.13443488
2020	76581952.23626788
2021	79790888.86600555
2022	73108313.49015671
2023	59798519.98184656