Year	%
1993	8.35
1994	11.72
1995	11.38
1996	11.37
1997	11.03
1998	10.9
1999	11.34
2000	10.07
2001	11.78
2002	10.82
2003	10.49
2004	10.58
2005	10.37
2006	10.37
2007	10.24
2008	8.72
2009	7.38
2010	7.71
2011	6.98
2012	7.14
2014	8.3
2015	10.13
2016	10.85
2017	12.08
2018	12.56
2019	14.16
2020	11.32
2021	8.5