Year % of population 1991 78.8 1992 81.6401672363281 1993 82.4245910644531 1994 80 1995 83.9886932373047 1996 84.7669982910156 1997 85.5419082641602 1998 86.312744140625 1999 87.078727722168 2000 88 2001 88.7 2002 89.3 2003 89.9 2004 90.5 2005 91.1 2006 96.4 2007 92.5 2008 98.1 2009 97.9 2010 96.4 2011 96.7 2012 96.8 2013 97 2014 97.9 2015 98.2 2016 98.9 2017 96.8 2018 99.8 2019 99.2 2020 100 2021 98.3 2022 98.3