Year % of population 1992 88.71432275653524 1993 89.31822491332869 1994 90.22308286507818 1995 88.59950583742629 1996 89.55790881685832 1997 90.01586439847392 1998 90.63688727070294 1999 91.24758768682122 2000 91.72250439196297 2001 92.32534434213424 2002 92.64873491111933 2003 92.73481978173139 2004 93.21472011360048 2005 93.51949946317089 2006 94.25589424403039 2007 94.47682261877522 2008 95.22194932067941 2009 95.4268422249441 2010 95.87479809878197 2011 96.18506933623188 2012 96.57136209536438 2013 96.86789270107874 2014 97.05936729216626 2015 97.28895052624662 2016 97.48185505920408 2017 97.71359423056309 2018 97.76033499937655 2019 98.00152664279872 2020 98.15275944821899 2021 98.27434537020876 2022 98.57913449545913