56% (1981)

63% (2007)

69% (1933)

69% (1991)

63% (1985)

53% (1991)

67% (1985)

78% (1932)

60% (1932)

47% (2009)

54% (1989)

70% (1994)

0% (1970)

61% (1992)

56% (1995)

60% (1981)

68% (1949)

60% (1996)

61% (2012)

71% (1974)