Year % of population 2000 47.9376418097458 2001 47.9308299146184 2002 47.9403399646676 2003 47.9585279330904 2004 47.9765655511515 2005 48.2089765693867 2006 48.4420613662786 2007 48.6755114329727 2008 48.8388533586508 2009 49.002134269348 2010 49.1653524016525 2011 49.1210322981325 2012 48.5628940906252 2013 48.001145477924 2014 47.4350340179374 2015 46.8647178050468 2016 46.2901049570925 2017 45.711013587619 2018 45.1260761207323 2019 44.5350838038496 2020 44.0012412785781 2021 43.4681932379658 2022 42.9284698999397