67% (2002)

71% (2006)

70% (1993)

61% (2003)

70% (1996)

72% (1989)

56% (2004)

65% (1992)

64% (2004)

45% (1971)

69% (2014)

0% (1915)

62% (2006)

0% (1970)

50% (1945)

50% (1933)