Year	%
1996	20.88
1999	17.61
2000	17.71
2001	11.74
2002	12.51
2003	12.48
2005	13.5
2006	11.35
2007	12.21
2010	12.91
2011	13.03
2012	13.04
2013	12.58
2014	9.52
2015	9.19
2016	10.15
2019	9.24
2020	9.61