85% (1999)

75% (1997)

68% (1998)

64% (1999)

59% (1999)

55% (1999)

54% (1999)

20% (1998)

58% (1996)

69% (1982)

48% (1993)

43% (1971)

55% (1995)

68% (1980)

33% (1991)

55% (1991)

34% (1976)

62% (1989)

93% (1997)

30% (1991)