Year	%
1998	21.2121212121212
1999	21.2121212121212
2000	21.2121212121212
2001	21.2121212121212
2002	22.9357798165138
2003	22.9357798165138
2004	22.9357798165138
2005	22.9357798165138
2006	25.2173913043478
2007	25.2173913043478
2008	25.2173913043478
2009	25.2173913043478
2010	25.2173913043478
2011	25
2012	25
2013	25
2014	25
2015	25
2016	27.5167785234899
2017	27.5167785234899
2018	27.5167785234899
2019	27.5167785234899
2020	27.5167785234899
2021	21.9512195121951
2022	21.9512195121951
2023	21.9512195121951