78% (1978)

49% (1985)

50% (1984)

48% (2012)

0% (1980)

61% (1983)

55% (1978)

55% (1993)

66% (1973)

60% (1960)

57% (2006)

40% (1948)

50% (1969)

67% (2005)

65% (1979)

75% (1987)

60% (1950)

60% (1988)

61% (2015)

60% (1967)