Year % of population 1990 100 1991 100 1992 100 1993 100 1994 100 1995 99.9978746319932 1996 99.97149827108919 1997 99.96528521115333 1998 99.9672900625295 1999 99.871375962596 2000 99.11370585877377 2001 99.16393251818886 2002 99.20259635883485 2003 99.21152377340917 2004 99.23754508368131 2005 99.27829501797798 2006 99.3002552444017 2007 99.36194193298878 2008 99.4071122004384 2009 99.46523965797901 2010 99.66472525543851 2011 99.66342378232062 2012 99.82790458192363 2013 99.84893432200396 2014 99.87540933441618 2015 99.16697761840715 2016 99.82830650555911 2017 99.96370940376163 2018 99.97047276077117 2019 99.95331424818579 2020 99.97602368236257 2021 99.98815790224172 2022 99.99772364681083