Year	%
1993	7.9
1995	6.74
1996	5.71
1997	5.65
1998	5.73
1999	5.34
2000	4.98
2001	3.93
2002	3.95
2003	4.33
2004	4.15
2005	3.85
2006	3.72
2007	4.06
2008	3.93
2009	4.42
2010	4.7
2011	5.11
2013	5.21
2015	5.8
2016	5.37
2017	5.58
2018	4.56
2019	5.09
2020	4.81
2021	5.09