Year	%
1989	33.65
1991	33.63
1993	36.64
1995	14.86
1999	33.51
2000	9.54
2001	8.33
2003	8.27
2004	6.03
2005	4.81
2006	4.62
2007	4.32
2008	4.27
2009	4.76
2010	5
2011	4.85
2013	6.06
2014	3.53
2015	3.52
2021	3.15