Year	constant 2011 international $
1994	1780.94824177805
1995	1943.62679692025
1996	2083.9243833753
1997	2217.33358892857
1998	2315.07775155029
1999	2408.14092457367
2000	2725.21410672374
2001	2867.99721152993
2002	3019.50028428896
2003	3189.8059970867
2004	3416.48947923287
2005	3367.252429553
2006	3557.31091643757
2007	3751.85216897694
2008	3918.04548858318
2009	3704.79678786572
2010	4265.51707869908
2011	4461.29604424442
2012	4654.51425663727
2013	4842.53277278132
2014	5052.12924214802
2015	5313.68396329197
2016	5638.06016895253
2017	5915.73593754416
2018	6220.26584940303