Year	%
1999	7.17
2000	6.25
2001	5.96
2002	6.34
2003	5.84
2004	6.41
2005	6.13
2006	8.46
2007	7.41
2008	6.74
2009	7.85
2010	8.48
2011	10.3
2012	8.76
2013	8.39
2014	8.08
2015	8.98
2018	8.1
2019	9.97