Year	Percent
2000	90.91853
2001	90.53213
2002	90.71932
2003	91.43633
2004	91.66464
2005	92.88144
2006	92.49825
2007	92.39031
2008	92.95332
2009	93.28521
2010	93.627
2011	93.2466
2012	93.30527
2013	92.79262
2014	93.04341
2015	93.08067
2016	92.00933
2017	92.6554