Year	US Dollars adjusted for inflation)
1991	167912.75
1992	167480.672
1993	175056.609
1994	182063.984
1995	187990.266
1996	187123.656
1997	193041.047
1998	201835.172
1999	211972.844
2000	221348.297
2001	225871
2002	229940.516
2003	237113.031
2004	242498.844
2005	241837.375
2006	247950.344
2007	262488.969
2008	255402.562
2009	228934.719
2010	233438.781
2011	234980.266
2012	223965.281
2013	227549.766
2014	231682.641
2015	236561.562
2016	247558.375
2017	251293.016
2018	257574.75
2019	263704.281
2020	270070.719
2021	276514.938
2022	282610.312