Year	%
2001	3.26
2003	3.65
2004	3.85
2005	3.85
2006	3.59
2007	3.92
2008	3.69
2009	4.17
2010	4.21
2011	4.27
2012	4.69
2013	4.63
2014	4.6
2015	6.36
2016	4.92
2017	4.6
2019	6.3
2020	4.81
2021	5.7