66% (2006)

76% (1999)

64% (2002)

71% (2010)

73% (2000)

65% (1998)

70% (2011)

70% (2009)

62% (1991)

70% (2016)

62% (2003)

69% (2016)

63% (2014)

62% (2000)

69% (2010)

65% (1994)

75% (1985)

58% (2003)

68% (2004)

62% (2005)