Year	%
2001	5.95
2002	7.62
2005	4.5
2007	3.5
2008	3.35
2009	2.13
2010	1.66
2011	1.67
2013	2.63
2015	1.14
2016	1.35
2017	1.43
2018	1.54
2021	1.72