Year % of population 1990 0 1991 0.0010333900629440696 1992 0.0030060510931948924 1993 0.008724506494451766 1994 0.018911592717831056 1995 0.051620303531619276 1996 0.07231788564188284 1997 0.13508853552920458 1998 0.24472711455321164 1999 0.3739765328612051 2000 0.5169095377062386 2001 0.6565449400511982 2002 0.8391686173928925 2003 1.114832948000939 2004 1.4952702723351503 2005 2.0158884715542937 2006 2.659157031734743 2007 3.369998385689231 2008 3.6691018684490015 2009 4.3129981002394135 2010 6.137967843995749 2011 7.596635252030017 2012 9.28488742007677 2013 11.159389096957344 2014 13.368985426335533 2015 16.01170992993358 2016 18.636308307550404 2017 21.270232902009518 2018 24.825270197589365 2019 27.76492234419859 2020 31.82428950646969 2021 35.861738732934576