Year	constant 2011 international $
1990	10911.8684832497
1991	11178.3755091889
1992	12231.1757860826
1993	12081.6041944248
1994	12453.4547303192
1995	12879.6804909912
1996	13761.8311657849
1997	14770.1116002366
1998	15946.7400533341
1999	17195.9346401121
2000	18335.9751321424
2001	19033.0386568447
2002	20453.8667603803
2003	23291.8787705768
2004	25015.6673606305
2005	26438.1514373837
2006	29790.8948699481
2007	31066.7370122517
2008	31974.0153022934
2009	30419.6768362814
2010	31259.8007905381
2011	30980.4544926655
2012	31179.7437853981
2013	31596.503962388
2014	31091.6291867837
2015	31459.9855547134
2016	29257.6950835483
2017	28566.8410806243
2018	28647.0523060742