Year	constant 2015 US$
1966	7024390230.842692
1967	7151436058.276919
1968	7562224000.779938
1969	7983793326.195568
1970	8946990809.897612
1971	9166914415.725252
1972	10817743266.845715
1973	10224334976.484356
1974	9791921133.132864
1975	9766844781.307747
1976	9113028253.586266
1977	8876312906.869843
1978	8871546298.896135
1979	8777504242.644112
1980	8275943672.401415
1981	8494382901.654398
1982	8670151358.92126
1983	8835671345.968225
1984	8699394740.088762
1985	8443316261.712782
1986	8602269136.115852
1987	9277577786.46637
1988	9646296747.414486
1989	10338254971.191837
1990	10772517001.504269
1991	11293717093.770863
1992	11514570531.646065
1993	12598909448.770813
1994	12773201477.341112
1995	13073366224.880098
1996	13058497727.792643
1997	12909570801.274826
1998	12608189958.698751
1999	12740282670.46904
2000	12852231986.314884
2001	13025085453.928452
2002	13285234306.157345
2003	13772313188.767393
2004	13954620755.26718
2005	14079346867.54671
2006	14487524781.64028
2007	14694979477.561817
2008	14575694935.602863
2009	13942336992.757513
2010	13739176618.331942
2011	13976916069.881237
2012	13891148675.614187
2013	13963061209.325428
2014	14059381527.321218
2015	14188936918.003582
2016	14384066451.100992
2017	14527493294.98654
2018	14802051831.05481
2019	14934129304.137753
2020	13452615521.986084
2021	14071627468.550463
2022	14806380290.26348
2023	15132129758.476301