Year	%
2002	16.35
2003	16.37
2004	16.44
2005	16.46
2006	16.51
2007	16.75
2008	16.68
2009	16.64
2012	9.11
2015	7.52
2016	7.52
2017	9.16
2020	9.17
2021	9.17