Year	US Dollars adjusted for inflation)
1991	67516.578
1992	74213.57
1993	72228.125
1994	72125.586
1995	72770.094
1996	74140.18
1997	94364.297
1998	102740.148
1999	104723.172
2000	110427.07
2001	108894.359
2002	109234.758
2003	103746.617
2004	108551.93
2005	99414.422
2006	102403.133
2007	97693.266
2008	94651.141
2009	89821.039
2010	93758.352
2011	97862.75
2012	94978.906
2013	92650.375
2014	90808.078
2015	89306.438
2016	88623.305
2017	88120.789
2018	88771.258
2019	89475.102
2020	90382.891
2021	92652.211
2022	94904.812