Year	US Dollars adjusted for inflation)
1991	66901.125
1992	68492.805
1993	70807.523
1994	73151.945
1995	73252.859
1996	73547.703
1997	73538.156
1998	73606.5
1999	72497.539
2000	72401.453
2001	72321.664
2002	71737.586
2003	71405.594
2004	71171.492
2005	69698.492
2006	70024.172
2007	70878.664
2008	72277.805
2009	74331.867
2010	75422.688
2011	76078.531
2012	77355.352
2013	78135.977
2014	78324.391
2015	78811.43
2016	79192.734
2017	79647.602
2018	79861.125
2019	81233.945
2020	82907.734
2021	84570.969
2022	86204.141