Year	%
1989	9.32
1995	4.11
1996	0.52
1997	0.52
1998	0.5
1999	0.47
2000	0.49
2001	0.34
2002	0.39
2003	0.31
2004	0
2005	0.35
2006	0.37
2007	0.24
2008	1.04
2009	0.91
2010	1.11
2011	1.8
2012	1.31
2013	1.3
2014	1.28
2015	1.25
2016	1.25
2017	1.15
2018	3.57
2019	7.54
2020	1.02
2021	0.5