45% (2005)

54% (1999)

58% (1969)

43% (1973)

64% (1975)

59% (1980)

20% (1976)

53% (1967)

65% (1967)

57% (1968)

70% (1968)

0% (1969)

0% (1975)

0% (1979)

80% (1981)

0% (1968)

0% (1968)

0% (1967)

0% (1980)

32% (1976)