Year	%
1992	7.43
1997	4.49
2001	12.73
2002	13.65
2003	5.07
2004	4.68
2005	3.22
2006	3.4
2007	3.29
2008	2.75
2009	2.91
2012	2.34
2013	2.45
2014	2.41
2015	1.9
2016	1.46
2017	1.73
2018	1.73
2019	1.71
2020	1.71
2021	2