Year	constant 2015 US$
1960	3623697263.477557
1961	3887238882.6093445
1962	3893454486.827737
1963	4112165060.608448
1964	4146021186.5867753
1965	4445309340.153601
1966	4782516354.858457
1967	5072324793.178546
1968	5221968869.99973
1969	5562561497.287311
1970	5927530535.230941
1971	6139072133.8567095
1972	6199895304.554886
1973	6712675314.73855
1974	6925407578.996972
1975	7210075893.468657
1976	7773856082.54117
1977	8175011187.359556
1978	7945708825.712758
1979	8013675990.735643
1980	8161814707.535668
1981	8195491642.016038
1982	7867140397.861733
1983	7506530244.873995
1984	7504997699.426216
1985	7803574418.40792
1986	8191819849.844182
1987	8446476404.972555
1988	8521653997.773303
1989	8673747066.72244
1990	8966639980.680246
1991	9264635519.828838
1992	9594044326.823711
1993	9913038360.907806
1994	10203850133.864521
1995	10504561338.496513
1996	10847627821.348347
1997	11436545311.608753
1998	12037332571.48721
1999	12369852009.000328
2000	12654748537.828352
2001	12815367528.73441
2002	13077398604.142221
2003	13323766161.443546
2004	13711487392.93572
2005	14167993006.432177
2006	14744803150.383583
2007	15359614158.183971
2008	16201768382.609945
2009	16796883111.843975
2010	17464997037.540627
2011	18373771543.162518
2012	19219984363.097107
2013	20359194057.216515
2014	21462687325.23288
2015	22578642604.920406
2016	23345741706.899384
2017	24450176518.914474
2018	25501853744.076847
2019	26439271462.48531
2020	24362281301.699905
2021	25663593689.042355
2022	26526858169.936485
2023	27126606280.858833