87% (1994)

86% (1999)

67% (2004)

53% (2003)

74% (1989)

66% (2000)

80% (1995)

60% (1996)

67% (2011)

65% (2007)

56% (1996)

66% (2007)

78% (1990)

64% (1990)

73% (1995)

62% (2000)

76% (2013)

64% (2010)

79% (2004)

61% (1999)