63% (1979)

50% (1991)

61% (1990)

64% (1980)

67% (1986)

64% (1987)

47% (2014)

51% (1988)

67% (1978)

65% (1977)

66% (1948)

48% (1984)

70% (2002)

55% (1999)

61% (1996)

57% (1995)

67% (1985)

57% (1960)

55% (2007)

61% (1956)