Year	constant 2015 US$
1960	8559204053.179692
1961	12039822547.459772
1962	11110470140.988678
1963	15004001624.105085
1964	17181832301.23907
1965	20710473841.964073
1966	20677144074.7297
1967	21121821308.11173
1968	23689278517.533607
1969	29643244228.339863
1970	32102141148.978535
1971	35718244481.35862
1972	41898929165.74808
1973	48157898860.674255
1974	36736631968.7637
1975	36357997380.683235
1976	39471765423.294174
1977	36339173384.98089
1978	38040547051.00667
1979	35343811618.59495
1980	35649018643.57385
1981	32108493110.277363
1982	31004369123.762127
1983	28343295654.680874
1984	27755462411.073063
1985	30619884074.209393
1986	32980943038.63986
1987	26168286468.827744
1988	30477445918.823837
1989	31104417229.648445
1990	31666490912.47462
1991	34771625835.28361
1992	31905153792.3254
1993	30505021752.20743
1994	30308722293.546494
1995	31964118854.897663
1996	34482697583.43594
1997	35467979425.210556
1998	41545045591.23165
1999	41352447467.57384
2000	46465150547.86016
2001	48539966281.63828
2002	49624076874.632416
2003	58856330308.98436
2004	58471602276.10858
2005	52251177059.00272
2006	64729314892.929665
2007	70251378301.77654
2008	63778193843.5445
2009	46632710294.11522
2010	41609935452.63983
2011	28363680735.0203
2012	22378438965.340225
2013	21688810133.04335
2014	22627699912.322254
2015	23632667841.315224
2016	25197291824.545692
2017	23954549735.527332
2018	25816927036.13749
2019	24727993390.607803
2020	26336533003.5621
2021	32275775478.309753
2022	34037989283.692955
2023	33852723930.729282