Year	constant 2015 US$
1976	11045705971.263517
1977	11488347788.223969
1978	11624643753.335173
1979	11496808320.89473
1980	11127795374.88539
1981	11122022796.144913
1982	10573074698.039043
1983	10201586501.152729
1984	10189891847.466505
1985	9959611787.547258
1986	9622127007.973518
1987	10001790523.85829
1988	10371971198.738045
1989	10799609392.664288
1990	11350399599.652754
1991	12026357117.685755
1992	12368482589.938137
1993	12893350667.95286
1994	13566535581.60632
1995	14194399085.922064
1996	14847648139.155373
1997	15632503828.027649
1998	16511179661.89681
1999	16507764859.701515
2000	16872258580.006104
2001	17171427023.177765
2002	17593769896.422207
2003	17851160278.44845
2004	18451388044.595867
2005	19355272998.360508
2006	20355962865.88141
2007	21233981296.962566
2008	22651045727.828968
2009	23278437720.73388
2010	24020948168.180027
2011	25359406069.574562
2012	26054265542.10108
2013	27784483098.955276
2014	29748030525.96604
2015	31873100506.5123
2016	33766058936.24225
2017	34760931842.6818
2018	36420678312.67231
2019	37375849244.45099
2020	34428163214.072044
2021	36003519105.57895
2022	37172973381.51918