61% (2003)

70% (1993)

72% (1989)

67% (2002)

71% (2006)

64% (2004)

57% (2004)

62% (2006)

69% (1996)

65% (1992)

50% (1971)

72% (2014)

50% (1933)

0% (1915)

50% (1945)

0% (1970)