Year	%
1996	3.472427
1997	3.472427
1998	3.472427
1999	3.472427
2000	3.472427
2001	3.01243
2002	3.01243
2003	3.01243
2004	2.682648
2005	4.003383
2006	2.996899
2007	8.249225
2008	2.996899
2010	1.728844
2011	1.714486
2012	3.718476
2013	3.892757
2015	5.702391
2019	3.983879
2021	2.844216