58% (1978)

55% (1994)

0% (1985)

42% (1978)

60% (1980)

0% (1976)

70% (2000)

58% (1980)

30% (1996)

0% (1984)

66% (1994)

48% (1994)

52% (1985)

70% (1982)

56% (2006)

50% (1980)

57% (1977)

71% (2006)

0% (2002)

90% (1999)