Year	US Dollars adjusted for inflation)
1991	48816.512
1992	49333.504
1993	49531.586
1994	50810.074
1995	52331.039
1996	53545.145
1997	55608.371
1998	56977.227
1999	58467.133
2000	61153.387
2001	62449.738
2002	64034.02
2003	66331.461
2004	69515.531
2005	71916.367
2006	74918.758
2007	77488.398
2008	79210.055
2009	77398.922
2010	81347.234
2011	85012.078
2012	87509.141
2013	88341.477
2014	89683.844
2015	91119.945
2016	92524.898
2017	94523.758
2018	96548.305
2019	98445.633
2020	100278.641
2021	102170.633
2022	104065.617