49% (1990)

0% (1978)

0% (1984)

53% (1986)

69% (2007)

50% (1990)

52% (1987)

40% (1984)

65% (1992)

70% (1979)

43% (1982)

20% (1984)

69% (1979)

72% (1986)

60% (1982)

42% (1994)

0% (1983)

58% (1980)

20% (1995)

72% (2001)