Year	%
1997	2.46
1998	2.46
2000	2.46
2003	2.46
2005	2.04
2006	2.04
2007	2.04
2008	1.37
2009	1.37
2010	1.37
2011	1.37
2012	1.17
2013	1.17
2014	1.17
2015	1.17
2016	1.17
2018	1.19
2019	1.19
2020	1.19
2021	1.19