Year	% of population
2004	36.5903448327264
2005	40.8749290184718
2006	36.2275165911742
2007	39.1075821837074
2008	42.3766175147738
2009	40.2490035617326
2010	39.5574335262672
2011	42.6371055231023
2012	42.544846354275
2013	43.0826325058803
2014	41.4608266221001
2015	42.6337412167761
2016	43.8623458561151
2017	40.9425637818243
2018	45.5140991404981
2019	44.4618476422891