80% (1982)

80% (1995)

85% (1984)

67% (1984)

61% (1985)

74% (2007)

65% (1981)

70% (1981)

60% (1982)

74% (1983)

61% (1995)

69% (2005)

65% (1983)

53% (1996)

61% (1981)

58% (1996)

45% (1985)

56% (1984)

56% (1984)

60% (1982)