Year	%
1992	12.66
1993	12.53
1995	11.41
1996	13.4
1997	13.93
1998	15.67
1999	14.76
2000	14.49
2001	13.51
2002	12.01
2003	12.87
2004	12.21
2005	11.74
2006	11.92
2007	12.17
2008	10.43
2009	12.21
2010	12.52
2011	12.03
2012	11.92
2013	11.01
2014	11.5
2015	11.53
2016	12.32
2017	14.68
2018	12.41
2019	11.47
2020	11.14
2021	10.4