Year	%
2002	15.68
2003	13.93
2004	13.95
2005	13.93
2006	13.41
2007	14.65
2008	14.74
2009	14.73
2012	3.13
2015	3.67
2016	6.48
2017	5.92
2020	9.93
2021	9.32