Year	constant 2011 international $
1990	10463.9599550096
1991	9563.88213573112
1992	8611.47455872664
1993	7382.2997222315
1994	5717.52856925436
1995	5059.82291520728
1996	4594.43233101207
1997	4497.39027526063
1998	4451.54794416577
1999	4484.73300625804
2000	4797.38027699732
2001	5291.85927037009
2002	5625.26499727842
2003	6210.75509130761
2004	7015.82283341774
2005	7279.25900298855
2006	7873.88391738588
2007	8522.49610211362
2008	8766.19422139608
2009	7505.67775746055
2010	7824.49845171438
2011	8281.86712612352
2012	8322.17303436674
2013	8338.91505034601
2014	8243.47351509088
2015	7464.93983359294
2016	7678.05369850508
2017	7906.54030108419