Year	%
1995	8.04
1996	9.19
1997	7.74
1998	6.29
1999	3.54
2000	3.17
2001	3.71
2002	3.59
2003	3.04
2004	3.57
2005	3.65
2006	2.99
2007	3.33
2008	2.91
2009	1.75
2010	1.77
2011	1.92
2012	1.51
2013	1.48
2014	1.47
2016	1.53
2018	1.26
2019	1.13
2020	1.02
2021	0.89