Year	%
2001	5.17
2002	5.39
2004	4.84
2005	5.95
2006	6.12
2007	6.24
2008	5.78
2009	5.45
2010	5
2011	4.76
2012	4.96
2013	5.02
2014	4.34
2015	5.3
2016	5.64
2017	4.52
2018	4.72
2019	11.98
2020	3.99
2021	4.6