61% (2001)

67% (2003)

54% (1949)

77% (1948)

62% (1952)

70% (1993)

52% (1984)

76% (1951)

37% (2004)

45% (2009)

62% (1980)

71% (1999)

49% (2011)

49% (1984)

54% (2009)

59% (2011)

59% (2002)

50% (2000)

59% (1998)

62% (2006)