Year	current US$
1960	115605870.02096437
1961	107812368.97274633
1962	108245283.01886792
1963	146023060.7966457
1964	176115303.9832285
1965	226235475.2904942
1966	236595268.09463814
1967	244715105.69788605
1968	248355032.89934203
1969	251574968.50063002
1970	294134117.31765366
1971	280834383.31233376
1972	289094218.1156377
1973	281678309.9301404
1974	308953521.5283719
1975	204111111.1111111
1976	278700000
1977	268764705.88235295
1978	330434782.6086956
1979	415000000
1980	242000000
1981	215000000
1982	182500000
1983	194000000
1984	458913258.9304951
1985	483554233.8756518
1986	502571961.5332987
1987	517053674.0420862
1988	492900000
1989	419712425.5879515
1990	311669538.7285508
1991	247948158.15490136
1992	250344412.07818228
1993	227444247.4653854
1994	348784843.3888429
1995	678725716.6111377
1996	722999697.8738613
1997	837552441.5381402
1998	634713533.0023638
1999	734918410.3040174
2000	659668069.1606934
2001	672714062.0112878
2002	692819583.9301113
2003	752307732.5194521
2004	1008067266.0034283
2005	1310093926.475306
2006	1524126929.509964
2007	1990712068.2815595
2008	3506150678.3806615
2009	4677180750.95161
2010	3687465342.7081676
2011	3583112054.546874
2012	4230158431.0652604
2013	4774874142.128427
2014	4874969924.059658
2015	4170603009.2065363
2016	3629227691.221345
2017	5122376576.577571
2018	4967717826.699864
2019	6047736363.122276
2020	5796021014.374068
2021	6396009272.792295
2022	5477862278.460301
2023	6597002337.421719