73% (1992)

65% (1993)

64% (1981)

65% (1992)

64% (1985)

55% (1994)

58% (1982)

64% (1991)

56% (1997)

55% (1993)

50% (1985)

50% (1991)

0% (1979)

30% (1979)

60% (1988)

26% (1979)

57% (1993)

53% (1980)

0% (1979)

100% (1989)