Year	% (national estimate)
1991	56.578
1992	54.499
1993	52.368
1994	51.731
1995	61.769
1996	60.12
1997	60.571
1998	67.043
1999	68.693
2000	73.9
2001	75.869
2002	66.843
2003	70.388
2004	69.717
2005	70.486
2006	72.109
2007	74.273
2008	71.741
2009	61.518
2010	61.716
2011	62.526
2012	65.437
2013	69.711
2014	70.534
2015	73.106
2016	77.615
2017	75.797
2018	75.421
2019	71.687
2020	65.548
2021	65.601
2022	71.176
2023	71.678