40% (1998)

52% (2011)

69% (1998)

55% (1992)

20% (1994)

64% (1988)

20% (1988)

40% (2012)

50% (1973)

35% (1989)

53% (1970)

50% (1975)

10% (1985)

20% (1983)

20% (1981)

20% (1979)

45% (1999)

45% (1985)

0% (1984)

35% (1979)