Year	constant 2015 US$
1960	1376783917.2450743
1961	892322439.2684138
1962	825607605.27566
1963	986400072.229809
1964	830311499.9897348
1965	893737419.1790557
1966	1333626795.477796
1967	1423669787.6153235
1968	1999149494.2823672
1969	2049324225.4363115
1970	2822921459.053218
1971	2862655870.602917
1972	2628915045.1588216
1973	3179383868.019349
1974	3008208486.4384475
1975	2060567648.334236
1976	2306469728.302304
1977	3133090794.979413
1978	3880701955.130418
1979	2930173776.566215
1980	3330233322.134721
1981	3172939933.0368333
1982	2452022344.1378345
1983	2208108895.9298735
1984	2223941471.382722
1985	2847263090.8245873
1986	2324520393.801906
1987	2841526648.458338
1988	2891663139.233901
1989	3184680516.53573
1990	2961915411.675233
1991	2729551330.578443
1992	2232125460.1563544
1993	2566253995.382576
1994	2799459420.0500565
1995	3034729962.809722
1996	3337690504.4874
1997	3622974360.857383
1998	4375946095.583693
1999	4019994396.4512606
2000	4466782355.75315
2001	5008220811.658226
2002	3987834649.589651
2003	4386840175.60823
2004	4721447835.188906
2005	5346590455.817199
2006	7029373603.115835
2007	7602867042.666065
2008	8677625265.417841
2009	9640227082.222595
2010	11099946009.499203
2011	11454738804.32338
2012	12955005479.579893
2013	13796371250.162937
2014	16158277569.992447
2015	15499001598.650164
2016	14894531990.86492
2017	16679978073.520006
2018	16289740464.799196
2019	17145160084.832075
2020	17526714393.32299
2021	19873921140.816086
2022	19280558574.896236
2023	19294473548.30924