80% (1980)

65% (1977)

72% (1978)

70% (1982)

40% (2000)

70% (1974)

0% (2006)

58% (1958)

50% (1984)

72% (1982)

0% (1972)

68% (1979)

35% (2001)

15% (1989)

65% (1983)

50% (1978)

72% (1981)

40% (2004)

50% (1971)

0% (1966)