57% (1993)

59% (1989)

62% (1988)

47% (1970)

34% (2001)

0% (1996)

54% (1981)

40% (1988)

45% (2001)

42% (1988)

50% (1988)

35% (1996)

70% (1987)

62% (1990)

0% (1995)

0% (1995)

30% (1982)

0% (1988)