Year	constant 2010 US$
1993	3034.864293384
1994	3127.57319365996
1995	3345.49978668031
1996	3853.06122465728
1997	4382.9404936555
1998	4655.49620089173
1999	4683.46259765784
2000	4998.22195171542
2001	5357.56257571323
2002	5900.91437789138
2003	6480.70022014037
2004	7024.6979375023
2005	7720.01289284401
2006	8748.69357810527
2007	9577.05739404421
2008	9132.834700765
2009	7754.69164591043
2010	7648.08827452984
2011	7954.74198429929
2012	8328.42931814568
2013	8648.04954366549
2014	8943.9581619094
2015	9332.49870921132
2016	9736.04117233999
2017	9976.15324363687
2018	10412.4814833596