Year	%
1999	11.89
2001	11.78
2002	13.69
2003	12.4
2004	11.9
2005	11.38
2006	8.54
2007	4.46
2008	4.53
2009	3.95
2010	3.75
2011	4.62
2012	4.6
2013	4.1
2015	1.23
2016	4.15
2020	0.93
2021	1.32