Year	% of total population ages 15+ (national estimate)
1998	57.87853666406366
1999	56.85862918114967
2002	55.82372839604489
2003	54.561844773714846
2004	54.2088247417897
2005	52.9765336728647
2006	52.945435699536304
2007	56.85783010479081
2008	57.562631189536276
2009	58.0900064075698
2010	59.00209161320813
2011	59.4658569897972
2012	59.34879035709432
2013	59.76454085734658
2014	59.34647891683704
2015	60.74854320260818
2016	59.87099849455414
2017	60.75606395653362
2018	61.19890457243291
2019	59.89937393500367
2020	55.76228356357997
2021	55.280758804576436