Year	US Dollars adjusted for inflation)
1991	12043.076
1992	8454.605
1993	5780.855
1994	6013.787
1995	6323.568
1996	6462.396
1997	7032.139
1998	7263.824
1999	6398.069
2000	6899.353
2001	7328.417
2002	8009.14
2003	8550.836
2004	9768.159
2005	10670.437
2006	11245.521
2007	11512.405
2008	11692.099
2009	12005.561
2010	12857.499
2011	13700.107
2012	13664.176
2013	13500.117
2014	12733.608
2015	12761.859
2016	12294.925
2017	12422.866
2018	12801.123
2019	13219.976
2020	13666.66
2021	14152.55
2022	14650.924