77% (1995)

75% (1995)

72% (1988)

72% (1990)

63% (2003)

70% (1999)

74% (1996)

70% (1987)

66% (1991)

55% (1989)

64% (2009)

78% (1985)

53% (1995)

68% (1999)

57% (1999)

73% (1986)

74% (1987)

55% (2007)

62% (1994)

60% (1989)