Year	%
1993	5.47
1996	3.64
1998	4.6
1999	3.74
2000	4.81
2001	3.76
2003	4.37
2004	4.61
2005	4.31
2006	3.12
2007	3.9
2008	3.38
2009	3.26
2010	2.98
2011	2.99
2012	2.82
2013	3.21
2014	3.32
2015	3.28
2016	3.1
2017	2.31
2019	2.93
2021	3.34