2001 |
64%
|
2015 |
56%
|
2008 |
69%
|
1998 |
64%
|
1991 |
68%
|
1980 |
59%
|
1990 |
59%
|
2005 |
62%
|
1989 |
65%
|
1990 |
52%
|
2008 |
62%
|
1987 |
65%
|
1995 |
69%
|
1979 |
57%
|
1987 |
51%
|
1987 |
56%
|
1991 |
64%
|
1994 |
59%
|
1985 |
54%
|
1993 |
41%
|
2001 |
69%
|
1984 |
65%
|
1982 |
58%
|
2007 |
71%
|
2001 |
70%
|
1987 |
60%
|
1995 |
57%
|
2000 |
65%
|
2001 |
56%
|
2004 |
60%
|
1983 |
57%
|
2001 |
71%
|
1994 |
64%
|
1995 |
65%
|
1992 |
70%
|
1989 |
49%
|
1990 |
64%
|
1994 |
72%
|
2008 |
75%
|
1982 |
70%
|
2009 |
76%
|
1993 |
70%
|
1993 |
57%
|
2000 |
59%
|
1988 |
57%
|
1987 |
44%
|
2010 |
52%
|
1978 |
71%
|
1993 |
74%
|
1995 |
70%
|
1991 |
42%
|
1980 |
40%
|
1997 |
60%
|
1986 |
50%
|
1992 |
62%
|
2004 |
87%
|
2013 |
67%
|
1990 |
63%
|
2007 |
72%
|
1999 |
64%
|
2010 |
52%
|
1997 |
--
|
2002 |
--
|
2002 |
--
|
1993 |
--
|
2012 |
--
|
2005 |
--
|
1993 |
--
|
2005 |
--
|
1987 |
--
|
1998 |
--
|