74% (1982)

73% (1970)

76% (1979)

73% (1983)

30% (1974)

60% (1972)

36% (1969)

0% (2009)

50% (1980)

0% (1971)

0% (1975)

56% (1968)

70% (1974)

0% (1969)

72% (1971)