Year	US Dollars adjusted for inflation)
1991	785.637
1992	793.935
1993	798.242
1994	834.535
1995	838.734
1996	861.434
1997	878.512
1998	879.449
1999	886.585
2000	923.677
2001	950.166
2002	935.372
2003	955.248
2004	984.174
2005	1003.91
2006	1020.805
2007	1040.254
2008	1088.19
2009	1120.732
2010	1155.224
2011	1167.522
2012	1192.651
2013	1211.187
2014	1244.714
2015	1248.279
2016	1224.289
2017	1298.271
2018	1336.08
2019	1371.986
2020	1408.578
2021	1442.299
2022	1475.235