Year	%
1996	8.85
1997	13.79
1998	8.85
1999	8.85
2000	17.56
2001	8.69
2002	9.24
2003	9.04
2004	8.93
2005	9.19
2006	8.2
2007	4.24
2008	5.52
2010	5.06
2011	7.29
2012	7.28
2013	7.54
2015	6.53
2016	4.9
2017	4.49
2018	4.49
2020	4.35
2021	4.38