Year	%
1992	13.73
1993	13.58
1995	9.02
1996	14.34
1997	14.92
1998	16.49
1999	12.01
2000	11.33
2001	10.01
2002	13.12
2003	14.05
2004	6.5
2005	5.74
2006	6.09
2007	6.58
2008	6.24
2009	6.65
2010	6.81
2011	6.8
2012	7.21
2013	7.67
2014	8.08
2015	8.61
2016	8.58
2017	9.13
2018	8.61
2019	8.39
2020	8.07
2021	7.72