Year	% of population
2001	14.50898220908187
2002	14.589916988856574
2003	14.510447407311254
2004	14.158116080770702
2005	13.469250584716841
2006	12.434177071303116
2007	11.37818697304439
2008	10.649110680580351
2009	10.034739008879091
2010	9.56868523955462
2011	9.185812980156733
2012	8.884268912863615
2013	8.650995101329567
2014	8.481711227671374
2015	8.27379670981339
2016	8.086237470996904
2017	7.865626116686988
2018	7.871544133012099
2019	8.338214939576487
2020	8.992824904971398
2021	9.474736161017795