Year	Percent
2000	92.03637
2001	92.47559
2002	92.91481
2003	93.35403
2004	93.79325
2005	94.23248
2006	94.6717
2007	95.11092
2008	95.55014
2009	95.98936
2010	96.42858
2011	96.8678
2012	97.30703
2013	97.73957
2014	97.73957
2015	97.73957