Year	constant 2015 US$
1960	787.2162255901969
1961	699.3058531879881
1962	736.511245501519
1963	770.4322689181992
1964	777.3794576900898
1965	761.856192775889
1966	839.7019907286
1967	834.0243309484755
1968	865.5745021276277
1969	898.4353905064308
1970	824.2403319025507
1971	971.0059964739444
1972	1097.7191798754363
1973	1122.5915249880609
1974	1128.988828410693
1975	1101.5765648082095
1976	1089.3672206200915
1977	1153.4947976176552
1978	1191.536894795829
1979	1238.506272409578
1980	1261.9946322772425
1981	1262.896079946836
1982	1235.8667510473429
1983	1206.4536925653429
1984	1182.8718871136175
1985	1189.4093058334045
1986	1229.9673169578195
1987	1257.9897389299556
1988	1290.0603664049852
1989	1304.6194576873918
1990	1313.8591626887664
1991	1290.6335465531176
1992	1242.0189530417897
1993	1210.272533416029
1994	1206.8732416835167
1995	1225.1438734929354
1996	1241.8785355697428
1997	1214.8476423485615
1998	1221.524315923744
1999	1215.1639244492599
2000	1187.3258104886474
2001	1195.4437778961476
2002	1166.0652859617196
2003	1165.1661026716656
2004	1188.5707112213886
2005	1221.8592894954481
2006	1262.8146660701773
2007	1309.8956390118844
2008	1274.4046794224016
2009	1278.1409019177609
2010	1342.768702173031
2011	1374.54424573528
2012	1401.4908246992493
2013	1420.0786924878887
2014	1457.5430655441291
2015	1496.6535726002107
2016	1525.7435513199139
2017	1550.2034574347235
2018	1604.8029321222791
2019	1653.828985266462
2020	1616.5024040585515
2021	1705.740389630795
2022	1754.585480358889
2023	1813.7609726600733