Year	US Dollars adjusted for inflation)
1991	1892.299
1992	1854.727
1993	1926.548
1994	2337.689
1995	3000.376
1996	5739.506
1997	7787.692
1998	9036.376
1999	9971.581
2000	10358.97
2001	10835.26
2002	11554
2003	12026.585
2004	12912.298
2005	14029.89
2006	14955.786
2007	15320.522
2008	14999.321
2009	14755.256
2010	15594.117
2011	16020.007
2012	16194.712
2013	16690.736
2014	17143.002
2015	17899.857
2016	17663.15
2017	18406.377
2018	19173.064
2019	19953.566
2020	20763.23
2021	21618.949
2022	22509.574