72% (1989)

72% (1994)

77% (2009)

75% (2014)

71% (1990)

77% (2008)

89% (2007)

59% (1996)

74% (2011)

74% (2013)

45% (2006)

70% (2011)

71% (1998)

71% (2013)

80% (2000)

40% (2000)

0% (1996)

65% (2000)

68% (2000)

66% (2007)