Year	% of population
1996	28.9
1997	32.7624130249023
1998	35.0945281982422
1999	37.421802520752
2000	39.8
2001	42
2002	44.8
2003	46.5
2004	48.7
2005	51
2006	53.2
2007	55.5
2008	57.8
2009	60.1
2010	69.7
2011	69.3
2012	69.3
2013	69.4
2014	71.8
2015	74.1
2016	76.4
2017	78.7
2018	81
2019	83.3
2020	85.6
2021	87.9
2022	89.9