Year	% (national estimate)
1991	49.343
1992	50.461
1993	51.608
1994	50.282
1995	48.201
1996	48.17
1997	49.197
1998	50.31
1999	50.284
2000	48.903
2001	47.155
2002	44.346
2003	43.794
2004	43.107
2005	44.571
2006	44.973
2007	44.886
2008	44.073
2009	42.199
2010	42.487
2011	42.267
2012	42.792
2013	41.97
2014	41.248
2015	40.988
2016	40.843
2017	40.794
2018	40.787
2019	41.649
2020	36.743
2021	41.06
2022	41.375
2023	42.092