Year	%
1991	14.5
1994	8.15
1995	6.74
1996	9.42
1997	9.82
1998	10.24
1999	6.24
2000	11.4
2001	11.94
2002	11.34
2003	11.55
2004	6.52
2005	5.77
2006	2.85
2007	4.02
2008	4.38
2009	4.28
2010	4.67
2011	5.12
2012	5.2
2013	5.4
2014	5.18
2015	5.39
2016	5.07
2017	5.12
2018	5.23
2019	5.23
2020	4.23
2021	4.8