Year	%
1997	3.41463414634146
1998	3.41463414634146
1999	5.85365853658537
2000	5.85365853658537
2001	5.85365853658537
2002	5.85365853658537
2003	5.85365853658537
2004	5.85365853658537
2005	5.85365853658537
2006	5.88235294117647
2007	17.3252279635258
2008	33.1649831649832
2009	33.1649831649832
2010	33.1649831649832
2011	33.1649831649832
2012	33.1649831649832
2014	29.4807370184255
2015	29.5492487479132
2016	29.5798319327731
2017	29.5798319327731
2018	32.7272727272727
2019	32.7272727272727
2020	32.7272727272727
2021	32.7272727272727
2022	33.0909090909091
2023	33.0882352941176