65% (1973)

60% (1993)

58% (1993)

62% (1989)

62% (2002)

58% (1985)

65% (1991)

0% (1989)

0% (1984)

53% (1990)

0% (1993)

63% (1992)

35% (1994)

70% (1997)

0% (1983)

64% (1989)

79% (1974)

40% (2002)

60% (1979)

0% (1973)