Year	constant 2010 US$
1990	3853.89786345872
1991	3621.39088690657
1992	3391.53929560656
1993	3145.5410606893
1994	3093.86279083303
1995	3056.98515018825
1996	3083.58774731824
1997	3112.10526891155
1998	3197.33328701845
1999	3315.73591656127
2000	3448.81293076615
2001	3329.89967000978
2002	3369.5985810851
2003	3436.94622646518
2004	3591.26981230634
2005	3755.02475748327
2006	3942.45237464873
2007	4193.00226998039
2008	4418.40669877812
2009	4398.88900268547
2010	4542.89971678317
2011	4645.28160135539
2012	4620.11010552189
2013	4751.13798508142
2014	4919.53989987186
2015	5105.40223505595
2016	5247.25078420924
2017	5256.71104857627
2018	5394.28847819909