Year	% (national estimate)
1986	6.1
1991	6.6
1996	9.86
2005	15.479
2006	15.142
2007	14.339
2008	12.333
2009	13.108
2010	12.094
2011	10.853
2012	11.931
2013	10.747
2014	10.473
2015	11.603
2016	12.88
2017	13.933
2018	14.204
2019	14
2020	11.702
2021	11.128
2022	11.428