Year	constant 2011 international $
1990	12286.9751404154
1991	11114.1541712336
1992	10892.543542033
1993	11075.7189446113
1994	11537.3217240979
1995	12179.7516599487
1996	12728.1024326376
1997	13106.3059048072
1998	13491.3909569753
1999	13756.0767198862
2000	14388.4996167757
2001	14937.1191531451
2002	15581.2932489595
2003	16256.7933975635
2004	17281.8743853947
2005	18187.4508052347
2006	19437.454335266
2007	20772.0127458762
2008	21712.0530918954
2009	21023.7209034221
2010	21387.8932646729
2011	22133.687499333
2012	22374.6896616066
2013	22753.1243125307
2014	23502.7165204963
2015	24455.1466726606
2016	25306.8341894152
2017	26590.6576164274
2018	27804.6995639748