Year	%
1995	12.88
1996	11.18
1997	12.81
1998	11.66
1999	11.79
2000	11.02
2001	12.37
2002	10.26
2003	10.29
2004	10.43
2005	7.02
2006	6.69
2007	8.17
2008	7.94
2009	8.72
2010	8.17
2011	7.87
2012	7.78
2013	6.54
2015	7.18
2018	12.11
2020	13.07
2021	13.64