Year	%
1993	4.01
1994	7.86
1996	8.66
1997	10.29
2001	12.31
2002	12.24
2005	11.2
2007	9.21
2008	8.94
2009	10.4
2010	7.59
2011	9.6
2012	9.37
2013	7.82
2014	7.21
2015	2.89
2016	4.51
2017	4.26
2018	3.83
2019	11.68
2020	4
2021	4.23