Year	%
1995	8.06
1997	6.58
1998	6.04
1999	5.15
2000	5.14
2001	5.8
2002	5.73
2003	5.96
2004	4.85
2005	5.97
2006	5.44
2007	4.75
2008	3.06
2009	3.15
2010	2.66
2011	2.53
2012	2.44
2013	1.93
2014	1.6
2015	1.52
2020	1.53
2021	1.78