Year	% of population
2000	1.3
2001	1.2
2002	1.2
2003	1.2
2004	1.1
2005	1.1
2006	1.1
2007	1
2008	1
2009	1
2010	1
2011	0.9
2012	1
2013	1
2014	1
2015	1
2016	1
2017	1
2018	1.1
2019	1.3
2020	1.35
2021	1.45
2022	1.5