Year	US Dollars adjusted for inflation)
1991	36103.703
1992	38359.512
1993	38123.562
1994	39016.98
1995	41667.363
1996	41669.758
1997	41513.52
1998	42793.711
1999	44002.805
2000	44830.855
2001	43978.879
2002	44177.367
2003	43891.32
2004	44658.375
2005	46013.871
2006	46477.762
2007	47079.059
2008	47809.762
2009	46710.762
2010	46576.438
2011	47529.938
2012	47784.035
2013	46758.664
2014	45328.125
2015	45479.449
2016	45174.832
2017	45725.402
2018	46508.762
2019	47373.32
2020	48052.82
2021	48972.844
2022	49628.121