Year	%
2001	78.48
2004	78.43
2005	78.43
2006	78.43
2007	78.3
2008	78.3
2009	78.3
2010	78.3
2011	78.3
2012	79.91
2013	79.91
2014	79.91
2015	79.91
2016	79.91
2017	80.19
2018	80.19
2019	80.19
2020	80.19
2021	80.19