Year	%
1996	15.3
1999	15.37
2000	13.68
2001	15.12
2002	13.49
2003	14.18
2006	9.92
2007	10.01
2008	9.87
2010	6.12
2011	10.67
2012	11.16
2013	11.67
2015	14.84
2016	14.73
2019	15.43