Year	constant 2015 US$
1974	19508642956.679054
1975	21168954495.1145
1976	20384142779.087273
1977	25814100766.63551
1978	30320060344.78444
1979	28144630030.405167
1980	28779130770.641582
1981	31075115427.13276
1982	31584287248.16403
1983	32943537876.849407
1984	34016878254.547577
1985	35706562244.080605
1986	30802825341.911396
1987	24642036395.729435
1988	26610184748.081394
1989	28022013264.72044
1990	26769938140.889515
1991	24304056901.259216
1992	22288201769.450436
1993	20936116718.638844
1994	21858311677.743565
1995	22041200974.94917
1996	21245990812.99746
1997	20423029818.017975
1998	24686310753.82501
1999	24177986384.46532
2000	25490908938.78737
2001	27096836201.410156
2002	29400067278.529945
2003	30840670575.177975
2004	33523808915.218464
2005	36172189819.52065
2006	38668070917.06758
2007	42573546079.69143
2008	47767518701.41383
2009	53929528613.896164
2010	58189961374.39398
2011	59295570640.50745
2012	64691467568.79357
2013	70319625247.27867
2014	76296793393.29736
2015	80264226649.74884
2016	82511624995.94176
2017	83831810995.87685
2018	85592279026.79022
2019	85078725352.6295
2020	78953057127.24019
2021	79268869355.74913
2022	81329859958.99858
2023	88161568195.5545