Year	US Dollars adjusted for inflation)
1991	91212.445
1992	92425.195
1993	89531.344
1994	89162.203
1995	89852.602
1996	89666.25
1997	85507.133
1998	82195.016
1999	81806.133
2000	81186.875
2001	81515.398
2002	82733.867
2003	83092.711
2004	81461.305
2005	79820.422
2006	82152.711
2007	80986.922
2008	78116.57
2009	75401.969
2010	75948.562
2011	76952.07
2012	75881.945
2013	72636.852
2014	69440.07
2015	67954.148
2016	65424.824
2017	64080.125
2018	68514.031
2019	69704.453
2020	71195.82
2021	72631.25
2022	73624.508