2013 |
72%
|
1972 |
79%
|
1976 |
79%
|
1973 |
79%
|
1975 |
79%
|
1974 |
79%
|
1972 |
79%
|
2005 |
67%
|
1970 |
65%
|
2013 |
73%
|
1981 |
67%
|
1980 |
67%
|
1975 |
64%
|