50% (1968)

72% (1967)

67% (1960)

0% (1965)

64% (1966)

69% (1997)

73% (1988)

45% (1992)

63% (1969)

40% (1970)

32% (1990)

55% (1960)

60% (1970)

56% (1982)

53% (1989)

58% (1985)

67% (1974)

67% (2007)

48% (2013)

65% (1976)