Year	%
1991	14.2
1992	14.32
1996	7.24
1999	16.68
2001	6.89
2002	5.53
2003	5.91
2004	5.81
2005	11.61
2006	20.68
2007	17.4
2008	24.72
2010	8.99
2011	8.99
2012	9.31
2013	9.3
2021	6.03