Year	constant 2011 international $
1990	29464.0685372014
1991	29608.3709633492
1992	29932.7019781399
1993	29615.9232402748
1994	30201.7381800056
1995	30726.7955067563
1996	31050.8228503298
1997	31664.0521483768
1998	32679.6882454744
1999	33624.3541976046
2000	34705.1410457103
2001	35136.9396690968
2002	35278.4396085697
2003	35317.6246897021
2004	36050.6010914167
2005	36374.9710210524
2006	37006.9948676667
2007	37670.5278381019
2008	37556.0958767363
2009	36289.8030255818
2010	36814.9211418022
2011	37440.6386298685
2012	37376.5354325521
2013	37398.9261198335
2014	37575.8118178524
2015	37835.8070767413
2016	38097.8770379454
2017	38955.8339662767
2018	39555.5446628918