Year	% of total population ages 15+ (national estimate)
1989	77.21
1996	75.8
1997	74.3
1998	73.7
1999	73.5
2000	72.3
2001	73
2002	72.5
2003	72
2004	71.41
2007	74.348
2009	75.828
2010	76.169
2011	76.274
2012	76.187
2013	77.022
2014	77.044
2015	77.198
2016	76.556
2017	76.127
2018	75.615
2019	75.63
2020	73.283
2021	72.897
2022	73.625