Year	constant 2011 international $
1990	9526.17033787976
1991	8998.92696590706
1992	8265.1553117106
1993	7704.8069531999
1994	7629.84908803625
1995	7570.08244247003
1996	7615.6796273835
1997	7665.58334644959
1998	7873.55187040365
1999	8126.0324203009
2000	8458.1438362851
2001	8256.72571524807
2002	8322.07401874264
2003	8482.21080873677
2004	8915.2361190289
2005	9215.69625547912
2006	9808.36812720956
2007	9984.87077895971
2008	10906.8061569578
2009	10910.9542540472
2010	11191.5432697396
2011	11404.0446664627
2012	11295.5890836673
2013	11588.8083495814
2014	12056.7466322619
2015	12338.3307217299
2016	12552.2565945201
2017	12570.4549497768
2018	12873.7852874711