Year	constant 2015 US$
1980	1740.5058384776642
1981	1804.010779467745
1982	1818.367820137591
1983	1799.878616642291
1984	1740.3476817517012
1985	1735.2903123438982
1986	1798.0150798246814
1987	1748.5787203022246
1988	1691.530949016606
1989	1808.6460781853245
1990	1606.296467764579
1991	1163.4915983848869
1992	1086.4387714303996
1993	1197.5809075005427
1994	1305.0010605716523
1995	1488.0208811962684
1996	1633.552000018852
1997	1464.2979625419916
1998	1603.6476502765138
1999	1821.8731310269397
2000	1960.8824597411515
2001	2143.5268394781515
2002	2247.4980801088122
2003	2380.6446207871336
2004	2522.4493744620922
2005	2675.5086370967542
2006	2851.3677591996106
2007	3044.896616820549
2008	3298.478908435319
2009	3432.170871972196
2010	3577.114324988681
2011	3678.047701451458
2012	3736.340079576479
2013	3780.6991925409625
2014	3855.760744096595
2015	3952.803573648134
2016	4090.3727282918317
2017	4249.820049398497
2018	4431.555595069888
2019	4543.387710483116
2020	4418.660873782925
2021	4857.111942018186
2022	5155.290859641511
2023	5394.182410007088