Year	US Dollars adjusted for inflation)
1991	17147.504
1992	18022.484
1993	18675.865
1994	20706.023
1995	21581.713
1996	22274.396
1997	23776.908
1998	24752.746
1999	25554.754
2000	26467.629
2001	26901.334
2002	27977.221
2003	28527.723
2004	30390.521
2005	31685.965
2006	33325.75
2007	36056.941
2008	36986.316
2009	36148.469
2010	38862.805
2011	39577.809
2012	40043.137
2013	40639.047
2014	41082.648
2015	41591.676
2016	41750.754
2017	42609.125
2018	43767.559
2019	45049.926
2020	46270.07
2021	47511.445
2022	48794.578