Year	constant 2010 US$
1996	25110795.849077
1997	26265892.4581457
1998	27290262.2640497
1999	31740070.4657966
2000	30918377.3592784
2001	30352261.1700351
2002	32487533.0090195
2003	34213693.9410389
2004	37784442.6465676
2005	38266224.5699015
2006	41618960.2263237
2007	43315514.4479706
2008	45663416.2978119
2009	43372036.3495908
2010	42971000
2011	41236764.5106063
2012	38253664.1473192
2013	38685204.380324