Year	%
1994	20.64
1999	12.86
2000	16.52
2001	15
2002	12.23
2004	10.44
2005	6.58
2006	6.32
2007	6.79
2008	7.35
2009	9.52
2010	7.32
2011	6.6
2012	12.38
2013	9.64
2014	10.55
2015	11.47
2016	12.25
2018	10.07
2019	11.48
2020	9.32
2021	9.3