Year	%
1990	29.14
1993	25.44
1994	25.54
1997	20.7
1998	11.64
2000	9.96
2001	9.88
2003	9.36
2004	10.43
2005	11.71
2006	11.5
2007	11.4
2008	11.28
2009	11.31
2010	10.41
2011	10.3
2012	10.47
2014	9.65
2015	8.29
2017	10.26
2018	12.25
2019	15.54
2020	9.49
2021	6.45