Year	US Dollars adjusted for inflation)
1999	8782.82625
2000	8967.24745
2001	8671.83645
2002	8453.58472
2003	9403.45365
2004	9670.08455
2005	10653.7844
2006	11175.12987
2007	11707.9854
2008	11856.02054
2009	11631.71901
2010	12120.56217
2011	4578.53181
2012	10208.67461
2013	8823.55195
2014	6697.10328
2015	6073.4062
2016	5848.93736
2017	7314.6244