Year	% of population
2000	20.4349967898208
2001	20.6250401442297
2002	20.8190014531611
2003	21.0168811943468
2004	21.2186795944865
2005	22.1330940380421
2006	23.0582502992261
2007	23.9943398349259
2008	24.9420767174442
2009	25.9006182017149
2010	26.8706693554718
2011	27.8486013644228
2012	28.8349908442982
2013	29.8293253436723
2014	30.8310574574087
2015	31.8407696975785
2016	32.7539396668352
2017	33.5283545372754
2018	34.2283271567139
2019	34.4924126004925
2020	34.7559254929635
2021	35.018292879656