Year	%
1993	22.54
1998	23.23
1999	14.87
2000	14.12
2002	14.71
2003	14.95
2004	14.86
2005	14.8
2006	12.74
2007	12.69
2008	13.78
2009	12.18
2010	12.29
2011	12.38
2012	12.13
2013	11.21
2014	12.12
2015	12.07
2016	11.89
2018	11.11
2019	12.57
2020	11.17
2021	12.26