45% (1990)

0% (1989)

35% (1999)

40% (1988)

47% (1969)

25% (1987)

25% (2000)

42% (2002)

60% (1989)

0% (1967)

69% (1998)

30% (1999)

20% (1994)

35% (1999)

25% (1984)

20% (1996)

20% (1996)

49% (1994)

64% (2002)

50% (1980)