Year	%
1999	6.69
2001	5.35
2002	5.32
2003	4.57
2004	5.73
2005	4.87
2006	4.27
2007	5.92
2008	4.2
2009	5.15
2010	8.55
2011	8.13
2012	7.94
2013	7.71
2014	9.92
2015	11.23
2016	14.99
2017	12.42
2019	14.56
2020	17.06
2021	11.98