Year	% of population
2000	0.7
2001	0.8
2002	0.8
2003	0.8
2004	0.8
2005	0.9
2006	0.9
2007	0.9
2008	0.9
2009	0.9
2010	0.9
2011	0.9
2012	0.9
2013	1
2014	0.9
2015	0.9
2016	1
2017	1
2018	1
2019	1.1
2020	1.1
2021	1.2
2022	1.2