Year	%
1997	54.74
2001	55.45
2002	54.49
2003	54.49
2005	54.49
2006	54.49
2007	54.49
2008	53.58
2009	53.58
2010	53.58
2011	53.58
2012	53.58
2014	53.58
2016	53.58
2018	52.9
2020	52.86
2021	52.86