Year	% (national estimate)
1990	52.201
1991	46.032
1992	37.061
1993	30.968
1994	28.479
1995	28.346
1996	26.816
1997	28.256
1998	30.666
1999	42.849
2000	43.755
2001	44.484
2002	44.121
2003	43.909
2004	43.165
2005	44.476
2006	45.421
2007	44.708
2008	45.018
2009	41.451
2010	39.945
2011	41.264
2012	42.701
2013	43.907
2014	42.903
2015	42.853
2016	43.371
2017	43.761
2018	45.463
2019	45.069
2020	41.389
2021	44.019
2022	46.915
2023	47.861