Year	% of population
1990	100
1991	100
1992	100
1993	100
1994	100
1995	100
1996	100
1997	100
1998	100
1999	100
2000	89
2001	89.5
2002	90
2003	90.5
2004	91
2005	91.5
2006	92.1
2007	92.6
2008	93.2
2009	93.8
2010	94.4
2011	95
2012	95.6
2013	96.2
2014	96.8
2015	97.4
2016	98
2017	98.7
2018	99.3
2019	100
2020	100
2021	100
2022	100