Year	constant 2011 international $
1990	2265.35867752998
1991	2213.47159242409
1992	2130.03339454931
1993	2027.23274160349
1994	2037.35726341752
1995	2097.76908040551
1996	2157.18645147736
1997	2117.48907712862
1998	2134.8173661605
1999	2115.86903184305
2000	2077.4775117929
2001	2096.15847700403
2002	2055.14800098355
2003	2055.21706520488
2004	2106.98373276421
2005	2188.28522929212
2006	2261.23293220478
2007	2346.17880211553
2008	2295.44577909682
2009	2306.21044828924
2010	2427.03574137834
2011	2516.43593489351
2012	2550.37952860181
2013	2613.94179966167
2014	2676.26453975795
2015	2768.46523469963
2016	2875.42084457163
2017	2936.24609754538
2018	3051.6898854742