Year	%
2002	36.41
2003	36.41
2005	35.9
2006	35.9
2007	35.9
2008	35.9
2009	32.77
2010	32.77
2011	32.77
2012	32.17
2013	32.17
2014	32.17
2015	32.17
2016	32.17
2018	32.5
2019	32.5
2020	32.5
2021	32.5