Year % of population 2000 75.4571098994597 2001 72.660165653945 2002 69.8687604593058 2003 67.0848379306513 2004 64.3079241125029 2005 61.5381398002921 2006 58.775109093232 2007 56.0118172449901 2008 53.1763313367393 2009 50.3548185014924 2010 47.5464041819683 2011 44.7524570344343 2012 41.972669647032 2013 39.2143321307519 2014 36.4708218401386 2015 33.7429563654679 2016 31.0308842595611 2017 28.3356558331643 2018 25.656900827453 2019 22.9951890579501 2020 20.351295155752 2021 17.7255403729904 2022 17.6351541545682