Year	%
1992	4.43
1996	11.41
1997	11.25
1998	11.26
1999	6.35
2000	7.85
2001	10.88
2002	10.74
2003	11.9
2004	6.12
2005	5.85
2006	5.46
2007	5.24
2008	1.52
2009	1.42
2010	2.51
2011	0.95
2014	0.46
2016	0.5
2017	0.03
2018	0.03
2019	0.02
2020	0.02
2021	0.02