Year	Percent
2005-01-01	77.0777605801985
2006-01-01	79.1361499038382
2007-01-01	80.2270114544978
2008-01-01	81.2507645709069
2009-01-01	81.4637368632998
2010-01-01	82.1894311236559
2011-01-01	82.9279446585639
2012-01-01	85.0072551064942
2013-01-01	85.6679115014319
2014-01-01	85.7628418379598
2015-01-01	85.6449677615189
2016-01-01	84.8293800827261
2017-01-01	86.2111328749986