Year % of population 2000 32.30429662793026 2001 31.46277519387457 2002 30.56451637292538 2003 29.63644898616079 2004 28.72224544133104 2005 27.73870300959691 2006 26.751996787705057 2007 25.79664782125651 2008 24.824802043327026 2009 23.863637732259086 2010 22.89505009904504 2011 22.45689054736691 2012 21.52728370914824 2013 20.62548432769705 2014 19.717607080136318 2015 18.799928985126378 2016 17.871802632788743 2017 17.067026747293806 2018 16.12697089731213 2019 15.26634440483172 2020 14.497697000938809 2021 13.718318313024088 2022 13.405640159281091