64% (1995)

55% (1982)

65% (1986)

51% (1994)

71% (1990)

42% (1993)

51% (2000)

66% (1984)

63% (1989)

59% (1992)

0% (1999)

41% (1996)

65% (1995)

0% (1992)

0% (1975)

35% (1996)

46% (1980)

10% (1977)

44% (1995)

77% (1983)