Year	US Dollars adjusted for inflation)
1991	9973.886
1992	10424.047
1993	10745.442
1994	10980.85
1995	11241.137
1996	11652.196
1997	12063.238
1998	12526.611
1999	12588.293
2000	13497.666
2001	13563.83
2002	13916.965
2003	14555.583
2004	15590.586
2005	15724.501
2006	16884.1
2007	17725.02
2008	18196.967
2009	18647.6
2010	19114.406
2011	19899.465
2012	20369.221
2013	20663.607
2014	21018.756
2015	21439.316
2016	22161.398
2017	23017.213
2018	23958.438
2019	24909.938
2020	25828.834
2021	26753.377
2022	27684.625