Year	% of population
2001	32.756077154095266
2002	32.205452737384185
2003	31.664285047419163
2004	30.48746741067775
2005	29.31431897810753
2006	28.45389432983056
2007	28.27591218141585
2008	27.81270004347824
2009	25.54179692505206
2010	23.31595668221869
2011	21.385384933419758
2012	21.14594922033563
2013	20.620911200834563
2014	21.22708853963898
2015	22.278443520148624
2016	22.962087520667662
2017	23.33767468373362
2018	23.528026313183066
2019	24.374440298605194
2020	25.321259334484846
2021	26.101029193878954