Year	%
1993	16.61
1995	15.37
1997	12.3
1998	12.31
1999	12.32
2000	12.35
2001	11.05
2002	9.14
2003	8.65
2004	8.18
2005	7.59
2006	6.54
2007	6.37
2008	2.42
2009	2.68
2010	2.95
2011	1.85
2013	1.93
2014	1.81
2015	2.17
2017	1.01
2018	0.9
2019	0.91
2020	0.83
2021	0.81