Year	% of total population ages 15+ (national estimate)
1992	63.77795657214683
1995	64.19462125146738
1996	62.83282702190677
1997	58.718744346505495
1998	58.00143900524147
1999	58.71073738452393
2000	57.62445214313179
2001	57.32436837229897
2002	55.95258093541423
2003	55.20053919322739
2004	55.05849478678722
2005	54.834332751994204
2006	54.88235935675875
2007	54.92985122557678
2008	55.172105740320035
2009	55.35275810004805
2010	55.59082182335296
2011	55.44595448075066
2012	55.88431983054397
2013	56.06775755181467
2014	56.552680011388524
2015	56.6287528216647
2016	56.59656499132338
2017	57.21804671122682
2018	57.30398328048704
2019	57.37970262099825
2020	57.15344704858952
2021	57.22073981637354
2022	57.7808261161941
2023	57.47324693208916