Year	%
1996	9.8
1997	15.29
1998	9.8
1999	9.8
2000	19.83
2001	9.88
2002	10.49
2003	10.54
2004	10.5
2005	9.99
2006	9.24
2007	7.33
2008	8.65
2010	7.53
2011	8.64
2012	8.83
2013	8.71
2015	7.5
2016	7.14
2017	5.94
2018	5.96
2020	5.71
2021	5.26