Year	% (national estimate)
1998	55.079
1999	52.739
2000	49.448
2001	48.22
2002	43.143
2003	39.805
2004	43.783
2005	45.102
2006	47.37
2007	51.149
2008	50.808
2009	51.421
2010	51.554
2011	52.934
2012	51.975
2013	51.68
2014	50.657
2015	45.776
2016	44.398
2017	43.017
2018	40.874
2019	39.911
2020	33.154
2021	35.915
2022	37.767
2023	36.831