66% (1976)

73% (1983)

67% (1979)

45% (1972)

54% (1978)

43% (1989)

0% (1992)

0% (1994)

58% (1989)

48% (1980)

62% (1978)

70% (1973)

60% (1976)

75% (1975)

43% (1977)

65% (1973)

46% (1973)

62% (1973)

20% (1973)

82% (1972)