Year	% (national estimate)
1998	55.297
1999	53.536
2000	52.568
2001	52.29
2002	49.987
2003	49.264
2004	51.764
2005	52.367
2006	55.26
2007	57.816
2008	58.869
2009	59.732
2010	59.683
2011	61.853
2012	61.015
2013	60.666
2014	61.561
2015	60.072
2016	59.546
2017	59.056
2018	58.371
2019	58.132
2020	54.927
2021	57.075
2022	58.204
2023	57.878