Year	constant 2010 US$
1995	4730.19857210104
1996	5090.91392454172
1997	5983.07701138859
1998	7953.43228510806
1999	7925.81505510813
2000	12761.0418548187
2001	11763.2651880059
2002	11243.49078508
2003	12584.4828465755
2004	14122.9169181346
2005	13404.0646758519
2006	12876.2123452363
2007	15568.1516950166
2008	19238.7826588551
2009	20422.1854279559
2010	22661.2714080133
2011	23194.7263403426
2012	23614.9612381303
2013	23576.6089942117
2014	28652.2600738156
2015	28511.0942063636
2016	23156.541606649
2017	24552.2481926887
2018	19598.2550177646