Year	constant 2015 US$
1960	15908737340.235338
1961	16761787111.170006
1962	18028015159.55318
1963	19470225866.569954
1964	20800236244.68608
1965	22502041173.263546
1966	25004834864.43105
1967	27159247018.81676
1968	29365194461.05553
1969	31288808475.025814
1970	34858219809.280685
1971	36564659955.11203
1972	38129081870.5821
1973	42032139795.45292
1974	43909401662.17241
1975	46091876857.82543
1976	50390779136.403496
1977	55350976954.682205
1978	61049773246.548485
1979	64329224521.78963
1980	67657323331.08568
1981	71653751952.26288
1982	75488910649.68616
1983	79704364262.1512
1984	84289302223.72491
1985	88206428692.95677
1986	93087620536.46516
1987	101948580888.59592
1988	115495624611.61752
1989	129575125644.17044
1990	144044991708.43863
1991	156372737078.5587
1992	169012952179.51303
1993	182959758879.24185
1994	197591095927.8724
1995	213636116013.33444
1996	225710710647.57977
1997	219495596601.21045
1998	202739225305.4556
1999	212009086618.7294
2000	221454615181.94397
2001	229082063572.24698
2002	243168402250.1999
2003	260650370324.98077
2004	277043563911.3451
2005	288645146658.33386
2006	302984491694.5868
2007	319452158416.9025
2008	324964940636.7332
2009	322720673508.1112
2010	346967938038.265
2011	349882927003.6331
2012	375224234353.8356
2013	385308369004.16693
2014	389101609925.9328
2015	401296238228.0839
2016	415081396923.2929
2017	432422173710.33344
2018	450682801200.33887
2019	460212749509.6262
2020	432369701127.27765
2021	439150043937.7919
2022	449965296578.6997
2023	458437321749.60815