Year	%
2005	4
2007	3.44
2008	3.15
2009	3.15
2011	3.13
2012	4.33
2013	4.8
2014	4.6
2015	5.3
2016	4.91
2017	16.81
2018	20.39
2019	12.61
2020	5.72
2021	6.25