45% (2005)

54% (1999)

58% (1969)

64% (1975)

20% (1976)

32% (1976)

53% (1967)

0% (1969)

0% (1980)

0% (1972)

65% (1967)

60% (1971)

57% (1968)

80% (1981)

54% (1982)

59% (1980)

0% (1979)

70% (1968)

0% (1979)

0% (1968)