Year % of population 2000 87.6018273385256 2001 88.1192100717408 2002 88.6379844039754 2003 89.1581503352292 2004 89.6797078655026 2005 90.2026569947952 2006 90.7269977231071 2007 91.2527300504385 2008 91.7798539767891 2009 92.3083695021592 2010 92.8382766265486 2011 93.3695753499573 2012 93.9022656723855 2013 94.2450378918434 2014 94.5878101113014 2015 94.9305823307593 2016 94.9305823307593 2017 94.9305823307593 2018 94.9305823307593 2019 94.9305823307593