64% (1990)

56% (1982)

80% (1975)

70% (1980)

30% (1979)

0% (1977)

0% (1973)

65% (1975)

61% (1979)

47% (1974)

47% (1969)

46% (1969)

44% (1990)

67% (1976)

73% (1974)

60% (1977)

50% (1974)

0% (1947)

20% (1962)

30% (1990)