58% (2003)

67% (1961)

58% (1994)

65% (1954)

61% (1988)

60% (2011)

57% (1988)

62% (1987)

57% (1996)

66% (2006)

62% (1999)

71% (1981)

63% (2003)

68% (1956)

65% (2011)

69% (1998)

69% (1989)

56% (2000)

60% (2008)

65% (1990)