Year	%
1993	9.5
1994	11.86
1996	12.39
1997	14.59
2001	12.09
2002	11.78
2005	11.51
2007	10.12
2008	10.1
2009	10.13
2010	6.99
2011	8.46
2012	8.15
2013	8
2014	7.35
2015	5.42
2016	5.31
2017	5.05
2018	4.86
2019	5.25
2020	4.95
2021	5.44