71% (1995)

69% (1992)

64% (2003)

55% (2005)

55% (1996)

50% (1982)

60% (1982)

66% (1994)

0% (1985)

50% (1989)

0% (1997)

55% (1985)

74% (1992)

63% (1987)

58% (2003)

75% (1992)

65% (1984)

54% (1981)

86% (1985)

60% (1998)