Year	%
1997	17.5182481751825
1998	17.5182481751825
1999	17.5182481751825
2000	10.6382978723404
2001	10.6382978723404
2002	10.6382978723404
2003	10.6382978723404
2004	21.9858156028369
2005	21.9858156028369
2006	24.822695035461
2007	22.6950354609929
2008	17.7304964539007
2009	19.1489361702128
2010	19.1489361702128
2011	19.1489361702128
2012	24.4604316546763
2013	24.113475177305
2014	24.113475177305
2015	23.4042553191489
2016	21.2765957446809
2017	21.2765957446809
2018	21.2765957446809
2019	21.2765957446809
2020	26.9503546099291
2021	27.6595744680851
2022	28.3687943262411
2023	28.3687943262411