82% (1999)

73% (1980)

50% (1989)

70% (1994)

68% (1965)

0% (1966)

0% (1978)

20% (1986)

55% (1987)

79% (1983)

54% (2006)

0% (1995)

81% (1994)

20% (1975)

0% (1969)

52% (1983)

40% (1967)

67% (1994)

50% (1988)

40% (1996)