61% (2001)

67% (2003)

62% (1952)

70% (1993)

77% (1948)

76% (1951)

71% (1999)

45% (2009)

59% (2002)

37% (2004)

62% (1980)

59% (2011)

55% (1995)

59% (1984)

49% (2011)

54% (1949)

51% (2008)

50% (2000)

59% (1998)

64% (1982)