Year	%
1992	4.43
1996	11.41
1997	11.25
1998	11.26
1999	6.35
2000	7.85
2001	11.19
2002	11.09
2003	12.28
2004	6.43
2005	6.2
2006	5.94
2007	5.71
2008	2.02
2009	2.51
2010	2.51
2011	2.45
2014	1.13
2016	1.19
2017	0.12
2018	0.11
2019	0.08
2020	0.08
2021	0.1