80% (1995)

80% (1982)

85% (1984)

67% (1984)

65% (1981)

64% (1983)

61% (1985)

70% (1981)

73% (2007)

53% (1996)

68% (2005)

61% (1982)

75% (1983)

61% (1981)

59% (1996)

61% (1995)

56% (1984)

56% (1984)

60% (1982)

45% (1985)