Year	constant 2015 US$
1960	957.4425346804442
1961	947.1942831723694
1962	964.5680870103862
1963	1015.538055850952
1964	1041.6033269629672
1965	1073.2714410746128
1966	1043.4353803661334
1967	937.1928229497877
1968	934.442888184718
1969	1053.6035799166293
1970	1210.2685048606452
1971	1304.2984631990103
1972	1322.4445154519067
1973	1360.6359252616837
1974	1436.4402065076724
1975	1367.975053706799
1976	1412.632562668174
1977	1442.7905053081206
1978	1393.3171930789158
1979	1430.9283570656287
1980	1459.1471776033493
1981	1349.376905269028
1982	1291.1036462796706
1983	1216.267541168012
1984	1201.905086552806
1985	1237.6398494455734
1986	1235.4061611808413
1987	1244.7195900559584
1988	1284.691122399829
1989	1286.0804591147862
1990	1330.3106990070276
1991	1318.8581129227382
1992	1324.5418457335322
1993	1288.9642603665493
1994	1267.016323947385
1995	1259.0990160304646
1996	1282.2328604843733
1997	1273.83806886087
1998	1274.6590105207108
1999	1268.58251632315
2000	1281.498856855443
2001	1301.50577310859
2002	1358.1880417030636
2003	1393.2851445169845
2004	1463.7543265176557
2005	1518.7417115871149
2006	1570.588675552755
2007	1619.8675076444463
2008	1647.1048574942697
2009	1703.4835301368057
2010	1759.669102081782
2011	1796.089429640553
2012	1833.4665463119177
2013	1894.252090094383
2014	1960.0568720146061
2015	1993.789361812668
2016	1996.8844605162806
2017	2008.257044972486
2018	2043.9299317025311
2019	2058.366560679168
2020	1987.472379348123
2021	2046.6854109150447
2022	2088.3867335958225
2023	2095.7106496658157