Year	US Dollars adjusted for inflation)
1991	81435.93
1992	84066.75
1993	84674.891
1994	88036.625
1995	91712.25
1996	92756.578
1997	94564.734
1998	95686.258
1999	96087.766
2000	98414.727
2001	97966.43
2002	96363.977
2003	94763.695
2004	93191.664
2005	94505.32
2006	95121.305
2007	96000.047
2008	94748.859
2009	91554.578
2010	94120.25
2011	94825.906
2012	92823.094
2013	93576.711
2014	93933.133
2015	94149.258
2016	93808.938
2017	95001.914
2018	95995.211
2019	97205.984
2020	98410.336
2021	99582.227
2022	100816.469