Year	constant 2011 international $
2000	12686.4451114127
2001	12996.5330636643
2002	13389.0154787208
2003	13838.1113346339
2004	14789.9947682233
2005	15349.8387448655
2006	16633.3107600158
2007	17691.5697110032
2008	18462.8065307253
2009	18300.5999770268
2010	19259.7202072496
2011	20200.805990212
2012	20532.7521716287
2013	20761.2300155933
2014	20915.6772633866
2015	21070.0303251348
2016	21033.8942187511
2017	21041.5695758133
2018	21095.6000875647