Year	%
1999	9.86
2001	9.77
2002	9.95
2003	7.74
2004	7.56
2005	6.99
2006	5.65
2007	0.63
2008	0.6
2009	0.51
2010	0.5
2011	1.2
2012	1.32
2013	1.22
2015	0.43
2016	1.23
2020	0.27
2021	0.43