65% (1980)

62% (1994)

52% (2002)

58% (2007)

79% (1959)

72% (2009)

79% (1939)

67% (2003)

75% (1938)

72% (1968)

62% (1997)

71% (2015)

60% (1996)

69% (1993)

59% (2009)

53% (1997)

73% (1953)

63% (2003)

62% (2005)

66% (1995)