Year	constant 2010 US$
1999	2269.89427713336
2000	2006.74409747845
2001	2455.39042416567
2002	2634.68352409627
2003	2993.58262936334
2004	3215.79669235547
2005	3428.74525534902
2006	3957.95292226993
2007	5101.30948055183
2008	5275.81578494816
2009	5308.44139831246
2010	5717.93157795322
2011	6466.29925633682
2012	6799.65390743425
2013	7482.22849744799
2014	7858.85455513018
2015	8012.02613021825
2016	7743.66438388325
2017	7817.12801957616