75% (1999)

79% (2014)

69% (1998)

73% (1995)

76% (1992)

81% (1982)

82% (1984)

75% (2004)

67% (1949)

70% (1975)

75% (2002)

26% (1997)

68% (2009)

77% (1999)

67% (1999)

74% (1996)

77% (2004)

74% (2004)

75% (2005)

83% (2005)