60% (1984)

60% (1985)

68% (1986)

0% (1983)

58% (1988)

59% (1988)

0% (1985)

61% (1987)

64% (1989)

50% (1994)

0% (1979)

70% (2007)

58% (1985)

0% (2006)

75% (1992)

80% (1983)

45% (1992)

53% (1986)

35% (1980)

0% (1982)