0% (1961)

42% (1982)

81% (1962)

53% (1978)

35% (1971)

48% (1987)

50% (1960)

55% (1970)

30% (1991)

51% (1973)

60% (1973)

73% (1957)

63% (1956)

75% (1963)

65% (1972)

40% (1972)

50% (1966)

0% (1976)

0% (1969)

60% (1979)