Year	% of population
2008	67.5514320933076
2009	61.713849332098
2010	68.5688917173915
2011	62.8279973188499
2013	69.4028975945665
2015	67.2567817345161
2016	52.8194124035174
2017	59.0740772442502
2018	30.0328868726567
2019	22.1388743729249