38% (1947)

64% (1996)

70% (2010)

68% (2005)

47% (2007)

44% (1999)

55% (1948)

79% (2014)

66% (1979)

42% (1991)

51% (2003)

55% (1988)

70% (1970)

71% (1990)

61% (2008)

56% (1993)

0% (2013)

62% (1980)

68% (1952)

74% (1964)