Year	%
1992	11.39
1993	8.92
1996	6.34
1997	5.59
1998	4.61
1999	3.86
2000	3
2001	4
2002	4.11
2003	4.5
2004	4.56
2005	4.01
2006	3.86
2007	3.52
2008	2.58
2009	2.41
2010	2.7
2011	2.33
2012	2.43
2013	2.43
2014	2.41
2015	2.43
2016	2.43
2017	2.44
2019	2.4
2020	2.33
2021	2.33