Year	constant 2011 international $
1990	730.228037854214
1991	715.865295730097
1992	775.554961451928
1993	813.030658584711
1994	863.890169072542
1995	913.008760758378
1996	959.793711306713
1997	1001.08733512606
1998	1046.24384606771
1999	1146.43329818096
2000	1288.98736999925
2001	1419.84996229176
2002	1574.68729149323
2003	1776.05419732225
2004	1999.71007505879
2005	2253.16710509311
2006	2529.64793187992
2007	2814.69532278721
2008	3084.19696445215
2009	3387.81824232079
2010	3688.49163630723
2011	3864.95976755573
2012	4114.22766439392
2013	4423.14638753102
2014	4737.45986102578
2015	5030.26414915118
2016	5288.57019877068
2017	5610.32470011296
2018	5922.02335753783