Year % of population 1990 99.8425200685198 1991 99.87829990869889 1992 99.86742480284862 1993 99.8605147957092 1994 99.86363637572843 1995 99.86861573829678 1996 99.86585412147011 1997 99.87763941510215 1998 99.89176539772122 1999 99.88686324418518 2000 99.45246266483355 2001 99.47310005665068 2002 99.49180218074393 2003 99.53282669477582 2004 99.52661001719565 2005 99.53598744044002 2006 99.58737408598147 2007 99.59735955562319 2008 99.62778836717885 2009 99.67467896928532 2010 99.78580296534972 2011 99.78737272427887 2012 99.89698965684995 2013 99.89987248533444 2014 99.91891689580538 2015 99.44228356284033 2016 99.87588204644392 2017 99.96080757773659 2018 99.96310570513837 2019 99.95053796875575 2020 99.96865449568641 2021 99.97989025309074 2022 99.97980694747481