Year	current US$
1980	1768.0773667409653
1981	1867.930737687044
1982	1879.1992130425451
1983	1983.8990745319854
1984	2185.1928412955303
1985	2370.938641925885
1986	2527.279848661809
1987	2706.7876742248404
1988	2954.0210729365886
1989	2930.947764755592
1990	2998.5208675995677
1991	3004.174440977232
1992	3087.050525921267
1993	3147.5610314505193
1994	3331.697904290063
1995	3744.9898245807185
1996	4152.029445272812
1997	4896.80150589417
1998	5300.592074161667
1999	5566.035574840636
2000	5750.1201375427145
2001	5707.6412186604575
2002	6044.181338984995
2003	6138.7658889356935
2004	6372.561216531613
2005	6882.980575248991
2006	7947.953979317531
2007	8565.533886897614
2008	8832.07656501378
2009	8665.807092815712
2010	8651.274255485836
2011	8484.346494841546
2012	9041.660138875597
2013	9193.671916962534
2014	9513.969753717778
2015	9871.41168058161
2016	9159.410307505535
2017	9482.30740845234
2018	9757.436427901734
2019	10159.629541852899
2020	8247.475137142766
2021	9009.71767420747