Year	US Dollars adjusted for inflation)
1990	1796.93643
1991	1601.59382
1992	949.03322
1993	886.03279
1994	956.47089
1995	1043.54314
1996	1121.88163
1997	1172.1368
1998	1267.57528
1999	1317.74192
2000	1404.32146
2001	1548.07585
2002	1761.88827
2003	2019.98487
2004	2244.22017
2005	2571.98576
2006	2933.83348
2007	3366.16219
2008	3629.1577
2009	3136.81173
2010	3218.38165
2011	3371.67283
2012	3606.48055
2013	3710.57574
2014	3827.3432
2015	3935.28877
2016	3932.55462
2017	4219.36855