Year	%
1996	12.6
1997	13.21
2000	10.21
2001	10.21
2002	11.29
2008	10.14
2009	10.25
2010	8.61
2011	8.53
2012	8.58
2013	8.44
2014	7.75
2015	7.2
2016	6.26
2017	5.99
2018	6.61
2019	7.61
2020	6.06
2021	6.44