Year	constant 2015 US$
1976	1952.4538767706579
1977	1958.4834884326876
1978	1843.5013099049654
1979	1759.4581703782044
1980	1713.950751873957
1981	1750.8183698281991
1982	1558.6763021919246
1983	1510.174505361215
1984	1462.3300157457454
1985	1498.5669376557394
1986	1411.665108404023
1987	1444.7737317294655
1988	1425.3168708445296
1989	1430.539119997091
1990	1474.9308461680826
1991	1517.6056958001043
1992	1513.2011879026338
1993	1522.9540504475146
1994	1557.7642010494294
1995	1613.2797446382863
1996	1680.7879221299484
1997	1745.8099566623152
1998	1818.7668148633998
1999	1748.7707414939728
2000	1698.0550203951825
2001	1721.734936000591
2002	1747.7810553869017
2003	1765.0796785828697
2004	1796.8752081899536
2005	1802.2427856258
2006	1892.0759376713395
2007	1941.0373910627757
2008	2123.3635020032075
2009	2132.7308074554385
2010	2231.373229284364
2011	2297.298632272523
2012	2311.9206253897755
2013	2401.0077624741834
2014	2436.90450190481
2015	2515.201526724809
2016	2610.038206597451
2017	2682.0633743902554
2018	2757.1955413546375
2019	2793.623463140422
2020	2534.864336651505
2021	2483.214722989546