Year	constant 2011 international $
1990	1883.02275037069
1991	1940.61462398812
1992	2125.81920439299
1993	2148.44287633111
1994	2280.29903595909
1995	2399.13374342025
1996	2370.08042656141
1997	2271.56013288708
1998	2248.7957185143
1999	2177.23892360262
2000	1816.51025590035
2001	1627.08686448893
2002	1539.80293662522
2003	1597.39036831459
2004	1633.53169458433
2005	1680.38846460231
2006	1755.42977658025
2007	1841.61151402683
2008	1928.4830315952
2009	1794.95183952224
2010	1871.11764335963
2011	2064.59579326473
2012	2102.19019401076
2013	2107.74678281916
2014	2097.37661278822
2015	2093.50247056906
2016	2108.80708861734
2017	2126.35292133917
2018	2141.70381177577