Year	US Dollars adjusted for inflation)
1995	24045674131.5006
1996	24629059461.7961
1997	26398616216.105
1998	27040223134.5098
1999	23755758797.5644
2000	25599017868.5148
2001	26877103625.5498
2002	28789621363.4826
2003	30060802352.7929
2004	32780256764.21509
2005	34596422952.0809
2006	36293152225.2341
2007	38430368884.6748
2008	40492805121.3899
2009	39231060776.62229
2010	39460357730.5224
2011	40013381123.366
2012	39607137113.7376
2013	40625727367.813
2014	39881747972.7617
2015	40183938020.4789
2016	41308012849.7895
2017	42079410618.1871