Year % of population 2000 28.3148177063518 2001 31.3264174645613 2002 34.3282770125974 2003 37.317210729861 2004 40.293351312739 2005 43.164348629617 2006 45.8471487078826 2007 48.5145140076309 2008 51.1677669755393 2009 53.8053522896457 2010 56.4281940263064 2011 59.0363938814959 2012 61.6304220236327 2013 64.20894901057 2014 66.7732098093891 2015 69.3230018564456 2016 71.8588125970391 2017 74.3798350030171 2018 76.8862788860029 2019 78.948092429375 2020 79.1354396150758 2021 79.3239578184911 2022 79.5136338496498