61% (1978)

50% (1970)

60% (1981)

50% (1979)

0% (1996)

0% (2002)

50% (1968)

54% (1982)

63% (1969)

75% (2008)

63% (1974)

50% (1963)

0% (1970)

40% (1980)

67% (2007)

50% (1953)

50% (2013)

57% (1985)

50% (1965)

50% (1968)