Year % of population 1999 97 2000 98.5 2001 98.6 2002 99 2003 100 2004 98.5 2005 99.3 2006 98.6 2007 98.6 2008 98.6 2009 99 2010 98.8 2011 98.9 2012 99.1 2013 99 2014 99.1 2015 98 2016 99.3 2017 99.3 2018 99.3 2019 99.4 2020 99.5 2021 99.6 2022 100