Year	current US$
1964	373576307.1895425
1965	360609103.64145654
1966	376757703.0812325
1967	350145441.98895025
1968	332242857.14285713
1969	411954741.8967587
1970	425815486.1944778
1971	410564861.61251503
1972	457318976.27965045
1973	565012990.1960784
1974	635643742.6900587
1975	666285619.4690266
1976	580128391.734052
1977	668295898.7783594
1978	923563610.3151863
1979	1079994039.7350993
1980	1070402952.3809525
1981	1086718464.19327
1982	1271194511.7029862
1983	963543076.9230769
1984	1057664541.8326693
1985	828277247.7424421
1986	450594854.58612984
1987	630919443.05731
1988	998083957.6797687
1989	884574408.573387
1990	579839929.0836338
1991	719697934.3040975
1992	605307969.5634762
1993	724812334.8017621
1994	798476052.4970173
1995	818478681.1440678
1996	909237753.8829153
1997	832918899.6434029
1998	637317792.274239
1999	644969848.1321361
2000	616098895.8462789
2001	1063272530.4601753
2002	1223305955.2167697
2003	1358820051.961327
2004	1416436678.6362123
2005	1612494099.504843
2006	1606494662.7327173
2007	2264325305.0228696
2008	2700598521.221594
2009	2664969385.4946613
2010	2606598850.150839
2011	3039492895.4129558
2012	3439491781.609645
2013	4893437944.244187
2014	4896171619.116751
2015	4228415484.63357
2016	3831793467.0283027
2017	3660065391.623892
2018	4048948816.586549
2019	4025178627.694038
2020	3984876896.8477592
2021	4200435081.434083
2022	4763857299.97544
2023	4395285093.893324