Year	constant 2015 US$
1960	27287513102.004704
1961	23574926517.969185
1962	18934192372.543297
1963	25431219789.995865
1964	26916253746.438366
1965	28586918218.71138
1966	27213325104.728485
1967	29785790538.97085
1968	33001535545.845303
1969	35784647535.95086
1970	38956118145.1136
1971	34541720238.04382
1972	44014431054.134514
1973	45692778905.95908
1974	49117415081.87987
1975	51595556464.07579
1976	55922750141.49716
1977	58863496043.68337
1978	64287670491.783226
1979	69094990985.12508
1980	69641260801.05373
1981	71730495901.0051
1982	76321250590.27136
1983	80442600430.48943
1984	84947383262.74687
1985	88090434111.56532
1986	88442796731.3778
1987	87823699342.14046
1988	86945457526.61615
1989	90771059536.33104
1990	91497228539.24998
1991	90399261261.38934
1992	92026450045.48364
1993	90093893897.25233
1994	89283051957.95348
1995	92675803280.95035
1996	96475509797.89388
1997	97536740346.7102
1998	102511117624.46153
1999	105791474981.3172
2000	109811551032.01433
2001	113105897561.98474
2002	119213616030.6228
2003	126962501072.82356
2004	132675813621.22768
2005	139840307556.3026
2006	143895676475.62024
2007	148356442446.0508
2008	152065353507.15826
2009	153890137749.29675
2010	161276864361.72562
2011	166115170292.62997
2012	170101934378.9872
2013	174524584672.94427
2014	181680092645.15527
2015	187493855609.34464
2016	194806115977.96802
2017	197728207717.8347
2018	200496402626.14722
2019	202300870249.60294
2020	192185826737.12277
2021	199488888153.13345
2022	206670488126.9932
2023	215143978140.21393