Year	constant 2011 international $
1990	4385.11203212655
1991	4386.61223418704
1992	4674.33443805863
1993	4886.65781099239
1994	5076.18955259663
1995	5259.52805964077
1996	5234.62003705938
1997	5325.50635277531
1998	5424.08347338225
1999	5434.8799068835
2000	5480.19124251985
2001	5490.0789658614
2002	5520.01330152061
2003	5537.5215276487
2004	5553.19007002748
2005	5676.0348079707
2006	5936.59129099246
2007	6025.85634693806
2008	6167.65123685681
2009	5951.25072771769
2010	6095.5545435709
2011	6294.67191501208
2012	6373.2841397904
2013	6453.91497361859
2014	6533.97794928402
2015	6645.17656699739
2016	6744.67086574579
2017	6832.47732132326
2018	6973.45801637731