Year	constant 2015 US$
1960	10643963241.483595
1961	12047686774.828516
1962	12635655379.008986
1963	11803089110.525782
1964	14013247664.753908
1965	16159755683.472658
1966	16956458057.279299
1967	16710304855.903908
1968	20617486676.113674
1969	23863818209.3836
1970	23130013011.8336
1971	25910761869.83633
1972	32207138791.869923
1973	34083252971.57891
1974	22661318152.908203
1975	25306466783.470314
1976	27031496373.83711
1977	30372593622.121094
1978	34099850174.909767
1979	35560947729.3418
1980	29915711746.94219
1981	26999694405.853123
1982	26128957565.39375
1983	27790167974.291798
1984	23277450632.3043
1985	25453732429.44297
1986	25480770149.074615
1987	24045500945.223442
1988	24664236341.860943
1989	26170985913.690628
1990	27337979338.640236
1991	28499668182.45977
1992	27505989547.12891
1993	26407406467.989456
1994	25593149381.227345
1995	26650323220.26289
1996	29062728222.2457
1997	30080714065.98437
1998	36875810375.27656
1999	39604010483.75351
2000	40738349834.81914
2001	42924984496.74023
2002	42781795201.12772
2003	49243304255.2117
2004	50702001933.261314
2005	44678488625.93202
2006	53341415491.69178
2007	61815833898.30858
2008	57369150325.519516
2009	49376855212.343346
2010	39824377496.03788
2011	29720465216.014442
2012	23275624374.08632
2013	21734499873.879288
2014	21040374185.836708
2015	21075194028.883194
2016	21566059174.389053
2017	23390042890.932022
2018	22374308248.848427
2019	21883607311.250378
2020	22326041109.567562
2021	26625084021.02693
2022	29730091349.853493
2023	30931576202.033962