Year	%
1992	5.83
1995	11.92
1996	11.31
1997	11.62
1998	13.63
1999	13.75
2000	7.79
2001	8.12
2002	12.8
2004	5.9
2005	4.79
2006	4.66
2007	4.87
2008	4.77
2009	5.17
2010	5.58
2011	6.07
2012	6.19
2013	6.21
2014	6.2
2015	6.16
2016	6.95
2017	7.35
2018	7.09
2019	7.06
2020	6.78
2021	6.73