Year	%
1995	9.29
1997	8.01
1998	7.4
1999	6.83
2000	6.56
2001	6.87
2002	6.57
2003	6.08
2004	4.93
2005	6.46
2006	6.29
2007	5.21
2008	4.38
2009	4.93
2010	4.02
2011	3.9
2012	3.75
2013	3.73
2014	3.43
2015	3.24
2020	2.49
2021	2.91