Year	%
2007	5.11
2008	2.83
2009	2.67
2010	2.62
2011	2.57
2012	2.19
2013	1.73
2014	1.7
2015	1.74
2016	1.47
2017	1.46
2018	1.48
2019	1.26
2020	1.47
2021	1.62