Year	constant 2010 US$
1990	5890.27604341737
1991	5209.68159951374
1992	4936.99125131982
1993	4512.62020399236
1994	4001.66928058123
1995	3738.4694732917
1996	3814.4993269459
1997	3941.12484785733
1998	3933.55776762162
1999	4078.42679260504
2000	4491.59182332101
2001	5106.6341669994
2002	5606.85299730821
2003	6107.70925919321
2004	6647.6921294863
2005	7227.98294897369
2006	7917.19534233992
2007	8523.76620456842
2008	8698.42365358633
2009	8573.70829395042
2010	9070.48825285747
2011	9603.24465532864
2012	9923.42220833588
2013	10368.4992994867
2014	10646.0344648129
2015	10617.4746550169
2016	10582.7008718243
2017	10867.738737726
2018	11165.5443580144