Year % of population 1990 0 1991 0.009999096631708263 1992 0.04053238785041441 1993 0.09021723307658523 1994 0.26847400696718937 1995 0.633840126836151 1996 1.2372214678472453 1997 2.1714771197320584 1998 3.7275462057342232 1999 4.834034946379228 2000 7.568742581720693 2001 9.616294014145332 2002 12.687749952757356 2003 14.516921317788361 2004 16.83208346102685 2005 18.629995001357155 2006 20.51813833509486 2007 22.798530496665823 2008 26.269227416047382 2009 28.92210675506383 2010 31.906590863019872 2011 36.47620427270991 2012 40.10759519034171 2013 42.818433263278614 2014 46.15379457538038 2015 49.452706774434965 2016 53.034437024629504 2017 57.79543453253132 2018 66.70854198970864 2019 67.27932870967925 2020 70.2285829533699 2021 73.68056807658277