Year % of population 2000 99.8 2001 99.8 2002 99.9 2003 100 2004 99.9 2005 97.9 2006 100 2007 100 2008 100 2009 100 2010 100 2011 100 2012 100 2013 100 2014 100 2015 100 2016 100 2017 100 2018 99.9 2019 100 2020 100 2021 100 2022 100