64% (1996)

84% (1997)

84% (1999)

69% (2005)

83% (2004)

49% (2013)

73% (2003)

73% (2012)

72% (2014)

68% (2013)

75% (2011)

58% (2009)

77% (1989)

76% (2012)

75% (2014)

77% (1995)

62% (1999)

68% (2015)

63% (2007)

59% (2019)