Year	%
2001	41.69
2002	41.69
2003	40.52
2004	40.52
2005	40.52
2006	40.52
2007	39.41
2008	39.41
2009	39.41
2010	39.41
2011	39.41
2012	39.41
2013	39.41
2014	39.41
2015	39.57
2016	39.57
2017	39.77
2018	39.77
2019	39.76
2020	39.76
2021	39.76