Year	%
1991	11.27
1992	16.7
1996	7.08
1999	20.03
2001	5.92
2002	4.02
2003	4.81
2004	6.99
2005	4.83
2006	3.59
2007	3.66
2008	3.6
2010	8.24
2011	8.24
2012	8.66
2013	8.62
2021	15.59