Year	constant 2010 US$
1997	7105.96482991295
1998	7267.83045360339
1999	7369.74171279671
2000	7586.21269316749
2001	7759.04778310601
2002	7978.31423027601
2003	8224.61653942852
2004	8758.8017596003
2005	9081.80769050059
2006	9798.41872263375
2007	10404.7263611166
2008	10813.5141876861
2009	10671.1732274964
2010	11191.4953095239
2011	11700.4471994457
2012	11866.446594381
2013	11980.2338860339
2014	12075.431338081
2015	12172.7061922031
2016	12175.9673940314
2017	12199.3899972724
2018	12245.6123569363
