Year % of population 2000 70.6328654119712 2001 70.7542299686215 2002 70.8735531188732 2003 70.9904699748775 2004 71.1053199610773 2005 71.217059799243 2006 71.326376049963 2007 71.4332608666322 2008 71.5377104551999 2009 71.6390606663563 2010 71.7379636235924 2011 71.8344159722769 2012 71.928094480601 2013 72.0190003098845 2014 72.1071370058076 2015 72.1952372438825 2016 72.2826047701817 2017 72.3694658949988 2018 72.4557428748714 2019 72.541058171011 2020 72.6253447367345 2021 72.738267015564 2022 72.8509256505983