Year	US Dollars adjusted for inflation)
1991	34035.172
1992	35488.223
1993	36691.793
1994	38672.305
1995	40113.902
1996	41494.492
1997	42959.785
1998	44676.156
1999	45941.992
2000	47990.352
2001	47702.508
2002	48931.195
2003	50266.188
2004	51427.078
2005	52492.27
2006	52542.48
2007	53058.945
2008	53903.652
2009	52439.422
2010	53065.277
2011	52222.535
2012	52393.641
2013	53203.008
2014	55920.199
2015	58914.449
2016	60729.41
2017	64102.16
2018	67326.227
2019	69963.727
2020	71982.32
2021	73362.312
2022	74834.992