Year	%
1993	7.89
1999	10.12
2000	8.29
2001	5.67
2002	5.56
2003	5.49
2004	2.39
2005	2.12
2006	4.48
2007	2.08
2008	2.15
2009	5.5
2011	4.45
2012	1.61
2013	1.28
2014	1.33
2015	3.69
2016	3.52
2017	1.37
2021	2.88