Year	US Dollars adjusted for inflation)
1991	9619.547
1992	7879.479
1993	7728.408
1994	6189.921
1995	5564.559
1996	5829.417
1997	5035.912
1998	5249.436
1999	5973.635
2000	6136.121
2001	6242.036
2002	6133.209
2003	6210.211
2004	6388.901
2005	7050.58
2006	7655.836
2007	8284.445
2008	9242.121
2009	9569.183
2010	10217.489
2011	11424.389
2012	12425.805
2013	13448.313
2014	14578.948
2015	15249.576
2016	16002.555
2017	16753.654
2018	17533.846
2019	18360.508
2020	19185.172
2021	20103.637
2022	21070.459