45% (1998)

30% (1993)

52% (1988)

35% (1999)

25% (2000)

57% (1971)

50% (2005)

20% (1998)

47% (2005)

60% (1989)

0% (1991)

55% (1992)

40% (1988)

45% (1997)

50% (2005)

0% (1991)

20% (1990)

47% (1969)

0% (1971)

69% (1998)