Year	%
1996	21.07
1999	18.19
2000	9.21
2001	9.21
2002	9.47
2003	9.56
2004	9.49
2006	9.15
2007	9.32
2010	8.38
2011	8.37
2012	11.14
2013	10.88
2015	9.7
2016	10.28
2020	9
2021	8.95