Year	%
2000	7.06
2001	9.17
2002	6.29
2003	6.46
2004	6.65
2005	7.07
2006	7.09
2007	6.32
2008	5.9
2009	6
2010	5.84
2011	5.43
2012	5.36
2013	5.27
2014	5.59
2015	5.56
2016	5.49
2017	4.86
2018	4.72
2019	4.92
2020	2.25
2021	2.12