Year	%
1994	31.42
1996	25.53
1997	26.73
1998	19.44
2000	15.57
2001	12.92
2003	15.43
2006	12.89
2008	12.09
2009	12.71
2010	11.59
2011	12.27
2012	11.51
2013	8.82
2014	9.06
2015	9.05
2016	9.17
2019	7.08
2020	9.46
2021	9.48