Year	constant 2010 US$
1995	27004.9568899236
1996	28952.4245659781
1997	31298.1959555879
1998	33415.3377455483
1999	35529.1950038141
2000	38310.9491417138
2001	38793.5758869824
2002	39634.8718225136
2003	41400.3182881343
2004	43663.7493321174
2005	45285.4360952336
2006	46931.3896257072
2007	47371.458758358
2008	44371.6481653473
2009	40181.4880247077
2010	40814.2310867094
2011	39343.6443381712
2012	38981.4755845394
2013	41143.8877376397
2014	44425.7794984685
2015	49095.8298884204
2016	53886.4497118806
2017	56478.1342493013