Year	% of population
1990	100
1991	100
1992	100
1993	100
1994	100
1995	100
1996	100
1997	100
1998	100
1999	100
2000	94.4
2001	94.6
2002	94.9
2003	95.1
2004	95.3
2005	95.6
2006	95.9
2007	96.1
2008	96.5
2009	96.8
2010	97.1
2011	97.4
2012	97.8
2013	98.1
2014	98.4
2015	98.8
2016	99.1
2017	100
2018	99.8
2019	100
2020	100
2021	100
2022	100