Year	% of population
2000	1.4
2001	1.3
2002	1.3
2003	1.2
2004	1.2
2005	1.2
2006	1.2
2007	1.1
2008	1.1
2009	1.1
2010	1.1
2011	1.1
2012	1.1
2013	1.1
2014	1.1
2015	1.1
2016	1.1
2017	1.1
2018	1.1
2019	1.1
2020	1
2021	1
2022	0.9