Year	current US$
1960	14800000
1961	14000000
1962	11600000
1963	7600000
1964	15600000
1965	18000000
1966	14045713.142857144
1967	16773000
1968	15049999
1969	14489999
1970	25299999
1971	22766631.417169686
1972	20411486.889962543
1973	33721790.47210505
1974	37535558.220448814
1975	52450643.12535394
1976	92977837.14066829
1977	106530363.1904542
1978	133872840.49452625
1979	233473687.09312752
1980	181144512.65734243
1981	138251006.5791991
1982	162572590.42440882
1983	171373975.8914025
1984	200513030.19372123
1985	184987523.93595117
1986	244728574.99596676
1987	160729866.92155173
1988	158571071.128357
1989	147651286.33330795
1990	143182958.61691263
1991	139864227.84244266
1992	112984503.50187743
1993	102031305.1251939
1994	47498580
1995	66627306.13474032
1996	83373731.50381331
1997	144372276.12551498
1998	111106101.80215627
1999	116759831.57549264
2000	111245631.85373633
2001	142952952.41289964
2002	121512891.56210846
2003	166283211.3530052
2004	247001899.73486838
2005	313565638.96837455
2006	361305561.99512684
2007	556349242.6250788
2008	583912881.2046183
2009	588300195.6953361
2010	657968905.4378699
2011	871553114.9504461
2012	918133646.1905686
2013	1055111376.4157889
2014	1142634537.535875
2015	1130492668.2925394
2016	1340967911.7791457
2017	1899457437.7163343
2018	2034370487.5684798
2019	2258781198.209152
2020	1966296256.2468328
2021	2160639708.8157206
2022	2993214749.410444
2023	3583751986.4530263