Year	%
1999	11.98
2001	11.43
2002	13.05
2003	12.82
2004	13.14
2005	12.2
2006	12.19
2007	2.71
2008	2.8
2009	2.68
2010	2.66
2011	3.81
2012	2.86
2013	2.91
2015	2.8
2016	3.15
2020	2.81
2021	3.36