Year	US Dollars adjusted for inflation)
1991	56711.555
1992	54486.207
1993	55762.77
1994	57175.07
1995	54863.141
1996	56819.59
1997	59622.883
1998	61126.496
1999	61190.277
2000	62204.953
2001	63930.48
2002	65075.555
2003	66842.523
2004	71723.656
2005	74759.305
2006	76364.047
2007	81113.25
2008	81800.391
2009	79533.68
2010	75451.117
2011	76326.984
2012	75772.516
2013	77335.008
2014	76776.328
2015	77888.023
2016	81171.391
2017	83745.289
2018	86609.43
2019	89582.312
2020	92530.219
2021	94804.383
2022	96978.734