Year	constant 2011 international $
1990	1968.92148184872
1991	1954.14004435946
1992	2019.33219599256
1993	2063.65942400674
1994	2141.89080126535
1995	2247.75990934337
1996	2351.85260971449
1997	2391.03854753292
1998	2474.61428386983
1999	2617.8965983232
2000	2666.2214694021
2001	2733.40452319868
2002	2796.24663144711
2003	2953.64464619713
2004	3121.60360290198
2005	3306.13552568017
2006	3502.93790755192
2007	3708.92016307981
2008	3766.28965397336
2009	3973.50216993475
2010	4199.57544567302
2011	4358.14643370122
2012	4524.81357604911
2013	4732.20643440327
2014	4999.91177777817
2015	5305.65476378252
2016	5644.80158188579
2017	5958.38343685059
2018	6289.68238449758