Year % of population 2000 31.2 2001 40.2 2002 44.1 2003 41.1 2004 51.9 2005 59.8 2006 59.7 2007 71.8 2008 67.6 2009 71.5 2010 73.3 2011 81.8 2012 91.5 2013 87.4 2014 91.4 2015 95.4 2016 99.3 2017 97.7 2018 100 2019 100 2020 100 2021 100 2022 100