Year	%
1993	14.83
1997	18.14
1998	19.56
2000	13.02
2003	9.36
2005	8.6
2006	8.38
2007	8
2008	8.39
2009	8.52
2010	8.56
2011	7.55
2012	9.49
2013	9.38
2014	9.28
2015	8.35
2016	8.85
2018	7.8
2019	8.11
2020	8.06
2021	7.97