Year	%
1996	13.83
1999	14.8
2000	13.29
2001	12.89
2002	12.28
2003	13.09
2006	12.06
2007	13.71
2010	9.72
2011	9.05
2012	11.65
2013	11.65
2015	10.53
2016	14.34
2017	15.35
2018	14.52
2019	14.52
2020	15.01
2021	15.14