69% (1993)

67% (2002)

72% (1989)

56% (2004)

66% (1992)

71% (2006)

61% (2003)

65% (2004)

69% (1996)

63% (2006)

50% (1971)

69% (2014)

50% (1933)

50% (1945)

0% (1915)

0% (1970)