60% (1993)

45% (1992)

40% (2006)

100% (1970)

47% (1969)

56% (1993)

45% (1999)

25% (1987)

10% (1995)

20% (1988)

45% (1997)

30% (1993)

40% (1988)

17% (1986)

0% (1989)

20% (1991)

45% (1985)

35% (1999)

0% (1967)

0% (1971)