Year	constant 2015 US$
1980	2253.8666221749536
1981	2138.6875181575483
1982	2032.1978840609752
1983	2040.369255337584
1984	1975.4273175257852
1985	1849.7213499267164
1986	1785.634190935534
1987	1875.0880889293474
1988	1840.6906876914284
1989	1861.660680432072
1990	1846.2085481970123
1991	1899.6637745867263
1992	2078.893867623872
1993	2099.951578394016
1994	2205.1607070589507
1995	2358.500908556493
1996	2328.9344805522564
1997	2243.824881451491
1998	2211.020322688613
1999	2142.1074722318303
2000	1790.3737490346314
2001	1608.941231048549
2002	1527.9302597064348
2003	1590.705671355022
2004	1674.5511651824795
2005	1757.8896421320637
2006	1790.0335649307012
2007	1814.049602950722
2008	1884.486007576691
2009	1895.0098041062515
2010	2030.6604761510798
2011	2129.0321119306336
2012	2127.580044180293
2013	2182.8768885971126
2014	2153.335512125029
2015	2134.8054182615474
2016	2197.9881778882395
2017	2210.911510307647
2018	2217.81727876586
2019	2203.962865981465
2020	2079.5403064639686
2021	2082.6677788084476
2022	2084.347055552292
2023	2099.029548399642