Year	%
1999	7.83
2000	6.8
2001	6.63
2002	6.8
2003	6.56
2004	6.92
2005	7.02
2006	8.93
2007	8.3
2008	7.61
2009	8.69
2010	9.4
2011	11.61
2012	10.09
2013	9.11
2014	8.94
2015	9.83
2018	9.58
2019	11.56