Year	%
2007	5.46
2008	5.75
2009	6.73
2010	6.88
2011	6.16
2012	5.79
2013	3.96
2014	3.63
2015	3.69
2016	3.01
2017	3.07
2018	2.84
2019	0.99
2020	2.59
2021	3.19