35% (1971)

0% (1992)

61% (1973)

56% (1976)

100% (1979)

54% (1974)

0% (1993)

57% (1990)

60% (1973)

50% (1974)

65% (1979)

55% (1971)

58% (2000)

44% (1983)

0% (1972)

61% (1974)

59% (1994)

57% (1977)

20% (1994)

40% (1983)