30% (1976)

52% (1957)

50% (1965)

0% (1995)

65% (1976)

0% (1965)

60% (1969)

43% (1973)

61% (1978)

52% (2006)

53% (1989)

60% (1970)

67% (2007)

63% (1966)

64% (1966)

48% (2013)

48% (1988)

70% (1997)

37% (1973)

44% (1989)