Year % of population 1990 99.54680017942397 1991 99.64453450158699 1992 99.13098674625121 1993 99.32707983227532 1994 99.31614209643574 1995 99.31632631711366 1996 99.39392113228728 1997 99.4256722630749 1998 99.42305864573066 1999 99.47598739388373 2000 99.63592805175179 2001 99.66194432245136 2002 99.60396730286934 2003 99.58313049881504 2004 99.66645427268979 2005 99.73934092472985 2006 99.73955672718623 2007 99.62934048685172 2008 99.74440856839433 2009 99.692574041584 2010 99.80796264184842 2011 99.78760411216258 2012 99.81318000802389 2013 99.83541509349264 2014 99.8482663987896 2015 99.8396896396459 2016 99.89585109751003 2017 99.94057645960223 2018 99.89856056636444 2019 99.94003671162929 2020 99.93326736812648 2021 100 2022 100