Year	%
1996	11.99
1997	12.81
2000	10.63
2001	10.52
2002	11.49
2008	9.26
2009	9.25
2010	7.52
2011	7.55
2012	7.5
2013	7.45
2014	6.73
2015	6.02
2016	5.04
2017	4.92
2018	5.14
2019	7.93
2020	5.15
2021	5.65