50% (1980)

77% (2001)

35% (1997)

40% (1978)

0% (2002)

0% (1982)

50% (1997)

50% (1994)

70% (1979)

66% (1990)

0% (2002)

0% (1978)

40% (2000)

0% (2000)

70% (1972)

60% (1974)

64% (2001)

0% (1980)

60% (1977)

60% (1978)