Year	constant 2010 US$
1991	9334.45059674944
1992	8988.01772839736
1993	8555.93802064104
1994	8550.87669094218
1995	8982.47280518888
1996	9026.55016670717
1997	9168.06082767237
1998	9216.42759462704
1999	9473.44694405896
2000	9837.8704456985
2001	10098.5665566097
2002	10460.9589866931
2003	10702.1531336292
2004	10925.1568093609
2005	11293.938985761
2006	11810.0230271008
2007	12617.745118156
2008	13170.630214595
2009	13255.015045867
2010	14067.0510147256
2011	14399.3456364232
2012	14787.3837194444
2013	15070.33069146
2014	15272.1723845535
2015	15544.1162848523
2016	15924.6550054593
2017	16099.299329258
2018	16486.2691414675