Year	US Dollars adjusted for inflation)
1991	130008.625
1992	134970.266
1993	138817.031
1994	143231.609
1995	147590.266
1996	149283.828
1997	152397.953
1998	151820.625
1999	153906.953
2000	157733.906
2001	160700.828
2002	162066.031
2003	166029.781
2004	171672.422
2005	175659.672
2006	175452.125
2007	174943.406
2008	170860.516
2009	169181.891
2010	170429.391
2011	170362.766
2012	171991.047
2013	172329.406
2014	173964.312
2015	175534.312
2016	177399.969
2017	178518.422
2018	180601.609
2019	182914.281
2020	185156.016
2021	187580.828
2022	189900.516