2000 |
65%
|
2001 |
59%
|
2004 |
44%
|
1996 |
70%
|
1988 |
66%
|
2009 |
36%
|
1991 |
81%
|
1992 |
81%
|
1993 |
81%
|
1990 |
81%
|
1990 |
81%
|
1990 |
52%
|
1990 |
63%
|
1992 |
68%
|