Year	%
1993	29.36
1997	17.34
2001	28.1
2002	25.22
2003	13.72
2004	32.66
2005	14.87
2006	30.31
2007	23.94
2008	13.12
2009	9.25
2010	9.27
2011	8.41
2012	11.24
2013	11.69
2015	11.68
2016	13.33
2018	12.95
2020	12.97
2021	13.33