Year	%
1993	7.52
1994	9.97
1996	10.18
1997	11.85
2001	10.04
2002	10.15
2005	10.25
2007	6.83
2008	8.51
2009	7.46
2010	4.62
2011	6.72
2012	6.32
2013	5.86
2014	4.98
2015	3.13
2016	3.43
2017	3.48
2018	3.45
2019	4.07
2020	4.09
2021	4.16