Year	Percent
1993	99.85274
1994	96.44631
1995	95.73728
1996	96.23592
1997	98.58966
1999	101.50132
2000	104.30903
2001	105.72796
2002	101.55304
2003	100.58865
2004	99.73683
2005	96.79063
2006	98.22522
2007	103.13706
2008	101.78352
2009	102.3012
2010	101.88728
2011	101.62908
2012	99.07105
2013	99.77473
2014	99.0425
2015	100.68836