Year	US Dollars adjusted for inflation)
1991	2813.847
1992	2429.591
1993	2316.907
1994	2138.751
1995	2066.994
1996	2086.919
1997	2138.025
1998	2168.808
1999	2200.196
2000	2221.293
2001	2248.8
2002	2274.249
2003	2305.073
2004	2415.192
2005	2511.001
2006	2617.81
2007	2797.852
2008	2964.823
2009	3116.408
2010	3289.963
2011	3477.992
2012	3670.311
2013	3867.475
2014	4074.904
2015	4311.706
2016	4559.509
2017	4752.995
2018	4959.854
2019	5206.952
2020	5463.813
2021	5749.985
2022	6058.435