Year	%
1993	3.6
1996	5.06
1998	7.41
1999	6.73
2000	7.94
2001	6.26
2003	7.32
2004	7.09
2005	7.59
2006	3.86
2007	3.95
2008	3.55
2009	2.79
2010	2.55
2011	2.59
2012	2.6
2013	2.6
2014	2.46
2015	2.22
2016	1.71
2017	1.29
2019	1.17
2021	1.53