Year	current US$
1980	191.23165083618747
1981	199.7530839645841
1982	173.79562100637196
1983	191.5334735032083
1984	225.42481174472155
1985	231.37551889037783
1986	258.46424397904644
1987	347.9067505413189
1988	397.82841218060827
1989	401.80066307893657
1990	423.08300830488037
1991	330.1222033012612
1992	327.863200368133
1993	333.84226128525955
1994	404.0088830155431
1995	412.46361287277836
1996	431.0686280962616
1997	521.7537234429137
1998	486.7658706631727
1999	496.31979838814516
2000	641.0335535484556
2001	684.199259492081
2002	745.252207123354
2003	831.024554879619
2004	919.5042330748025
2005	1063.288290196651
2006	1153.4543844576508
2007	1483.5539427926951
2008	1521.6458038749697
2009	1495.2967051520186
2010	1790.6809749346576
2011	2029.255122289596
2012	1991.9132920851146
2013	1979.1596948585452
2014	2125.8086021576896
2015	2186.759004317896
2016	2289.5463804379265
2017	2603.9965604706917
2018	2610.6226218408706
2019	2903.8185992205968
2020	2716.0705443983734
2021	2937.6175042541345