Year	%
1996	13.79
1997	14.58
1999	14.99
2000	11.36
2001	10.91
2002	10.2
2003	10.78
2004	10.79
2005	10.4
2006	10.82
2007	10.59
2008	10.59
2009	10.51
2010	10.44
2011	11.06
2012	9.37
2013	9.36
2014	9.35
2015	9.73
2016	9.48
2017	13.43
2018	12.85
2019	10.98
2020	10.98
2021	10.73