Year	US Dollars adjusted for inflation)
1992	7675.58781
1993	7791.72643
1994	8242.69959
1995	8698.86838
1996	9267.02703
1997	9811.17677
1998	10191.10526
1999	10159.83269
2000	10296.71418
2001	10657.68847
2002	11143.76389
2003	11755.3478
2004	12376.06203
2005	13210.26925
2006	14326.25988
2007	15868.80441
2008	16747.81473
2009	15818.56395
2010	16600.61359
2011	17046.60794
2012	17299.62933
2013	17538.64883
2014	18003.54034
2015	18678.935
2016	19275.08676
2017	19897.15351