Year	% of population
2000	29.2036888401516
2001	30.4360322594528
2002	31.0518318596718
2003	31.6201289990803
2004	32.1413169353801
2005	32.6181080742434
2006	33.0502370446673
2007	33.4374468041965
2008	33.7793067711292
2009	34.0757324816563
2010	34.3266154418974
2011	34.5313813628435
2012	34.6899269606426
2013	34.802124546897
2014	34.8674297281274
2015	35.8152661023519
2016	35.8348906522207
2017	35.8566241481776
2018	35.8804627544981
2019	35.9066757549833