Year	constant 2011 international $
1990	2721.90453952429
1991	2850.97533682167
1992	2888.64708982371
1993	3047.86748288538
1994	2971.1045800075
1995	3137.22545031414
1996	3017.38463313587
1997	2830.20362860634
1998	2921.18108996008
1999	2973.33604651506
2000	3119.98668857311
2001	3181.28194200488
2002	3204.64236393129
2003	3270.97366588455
2004	3176.76922309755
2005	3257.25966588631
2006	3276.40280169345
2007	3240.61574977716
2008	3196.32131641676
2009	3251.7863199643
2010	3320.24779501444
2011	3413.50038953027
2012	3311.78338429199
2013	3141.31404356619
2014	3030.10455114275
2015	3137.22603293198
2016	3121.35040404389
2017	3185.28068520227
2018	3196.01025115809