Year	constant 2015 US$
1980	1682.1880318058797
1981	2271.9770118261304
1982	2274.9371775586073
1983	2112.0825986374657
1984	2128.31028759976
1985	1780.449261298223
1986	1862.054822545263
1987	2137.263165441378
1988	1931.2017821775105
1989	1864.6053928812637
1990	1449.8582506371963
1991	1606.1625875825514
1992	1502.389404905655
1993	1451.4583335311604
1994	1414.910204687686
1995	1415.4342856298033
1996	1524.1071808491658
1997	1596.1273531724364
1998	1613.8626632414664
1999	1596.6924317969817
2000	1651.370136798449
2001	1763.8859926648338
2002	1708.5024124686581
2003	1824.4268261240315
2004	1836.1318330886493
2005	1828.4971365884787
2006	1963.8207886850107
2007	2058.0212693026633
2008	2290.3689795889118
2009	2571.830421487659
2010	2393.368298733692
2011	2565.3755204565587
2012	2765.9892110888777
2013	2976.6380685357913
2014	3053.0432397364493
2015	3412.020027739939
2016	3882.424931638952
2017	3557.0454319315586
2018	3489.5451147927306
2019	3427.6466166478463
2020	3037.4584231834565
2021	3424.0428402958237
2022	3695.0838855363722
2023	3919.811080831243