Year	%
1993	14.82
1997	21.4
1998	20.71
2000	17.72
2003	15.06
2005	12.21
2006	11.98
2007	12.08
2008	12.53
2009	12.45
2010	12.49
2011	12.3
2012	12.53
2013	12.52
2014	12.43
2015	11.32
2016	11.59
2018	11.68
2019	11.69
2020	11.67
2021	11.41