Year	constant 2011 international $
1990	8969.83801155226
1991	9511.78575513602
1992	10400.8686874939
1993	10907.191688359
1994	11276.8038281085
1995	12100.9450991843
1996	12741.2032615414
1997	13503.5303288374
1998	13907.3711941791
1999	13681.0148840918
2000	14241.1549463274
2001	14546.7971096787
2002	14837.8229037926
2003	15283.8226889144
2004	16216.5698367064
2005	16970.1053283608
2006	17852.6273985903
2007	18529.3025668337
2008	18978.8599816493
2009	18485.1350173976
2010	19363.220303036
2011	20342.5709204911
2012	21219.1765472762
2013	21862.4413780466
2014	22013.851112076
2015	22257.3120536501
2016	22331.2260762268
2017	22296.8370043166
2018	22873.8070144633