Year % of population 1990 0.2344591681809931 1991 0.3783985240501211 1992 0.5956696270665908 1993 0.8458646832992728 1994 1.7100567849501795 1995 3.223289555565271 1996 5.896576205887309 1997 9.233307363759787 1998 13.831743505069737 1999 19.982429898979383 2000 26.977549284914954 2001 32.328279372470355 2002 40.22913284342986 2003 44.3748736469167 2004 49.06930463155248 2005 52.632010110842295 2006 55.184371064044846 2007 60.4995607291072 2008 62.62176437359922 2009 64.15036480287604 2010 66.5616360115299 2011 67.54169619742069 2012 70.19318820861052 2013 71.529156133675 2014 73.1352703768472 2015 75.67833892276597 2016 79.85911688204827 2017 80.51028524744319 2018 82.39164923103694 2019 84.77692598933626 2020 86.20273029775298 2021 87.38720082870358