Year	US Dollars adjusted for inflation)
1991	36968.23
1992	38309.445
1993	37788.035
1994	38290.973
1995	39979.332
1996	40937.793
1997	41624.547
1998	41575.895
1999	42818.746
2000	43599.836
2001	43687.75
2002	43651.758
2003	43778.734
2004	44732.074
2005	45165.461
2006	45618.516
2007	46686.445
2008	46593.098
2009	46608.34
2010	48290.082
2011	49015.77
2012	49016.305
2013	49659.754
2014	49286.945
2015	49511.332
2016	49601.535
2017	50138.273
2018	50851.262
2019	51898.91
2020	53064.953
2021	54152.77
2022	55156.062