Year % of population 1990 0.7420732437352284 1991 1.1035611676817534 1992 1.6430556803026186 1993 2.16280954150505 1994 4.614666007817479 1995 8.732886180073809 1996 15.462129549635353 1997 20.970108385586705 1998 29.58181169002699 1999 35.88268761730924 2000 43.884655310394294 2001 50.1695828638859 2002 59.059163086619265 2003 61.94128849226922 2004 64.87480101318324 2005 68.32895527617634 2006 69.2709210086274 2007 74.82365533906629 2008 74.2661395302531 2009 71.9153348849765 2010 72.53939481817115 2011 71.04074853120456 2012 75.52240205059714 2013 72.82857988170872 2014 74.40256842296685 2015 76.08973908271572 2016 86.1046615931719 2017 87.81817184453658 2018 89.11497116393747 2019 89.68080509990811 2020 90.79069484364445 2021 91.86313226516795