65% (1992)

65% (1993)

62% (1981)

72% (1992)

55% (1994)

64% (1991)

58% (1982)

50% (1985)

50% (1991)

30% (1979)

60% (1988)

55% (1993)

0% (1989)

64% (1985)

30% (1979)

56% (1997)

0% (1979)

0% (1979)

57% (1993)

53% (1991)