Year	%
1993	8.17
1995	5.52
1996	5.59
1997	5.23
1998	5.77
1999	5.45
2000	4.47
2001	3.66
2002	3.26
2003	3.93
2004	4.15
2005	3.48
2006	3.26
2007	4.69
2008	3.73
2009	5.24
2010	5.97
2011	7.95
2013	9.07
2015	10.95
2016	10.69
2017	13.23
2018	7.38
2019	10.1
2020	10.23
2021	7.93