77% (1995)

75% (1995)

72% (1988)

63% (2003)

72% (1990)

74% (1996)

70% (1999)

66% (1991)

55% (2007)

55% (1989)

64% (2009)

82% (1994)

70% (1987)

68% (1990)

68% (1999)

48% (1986)

78% (1985)

73% (1986)

53% (1995)

60% (1999)