Year	%
2001	12.1
2002	9.23
2003	9.15
2005	8.44
2006	7.74
2007	7.53
2008	7.94
2009	4.45
2010	4.42
2011	7.93
2012	4.42
2014	4.12
2016	3.48
2018	4.42
2020	4.36
2021	4.38