60% (1999)

0% (1981)

60% (1989)

50% (1984)

50% (1994)

80% (1981)

0% (1990)

0% (1982)

80% (1979)

64% (1986)

53% (1995)

0% (1996)

0% (1980)

70% (1997)

0% (1992)

0% (1998)

0% (1986)

0% (1987)

0% (1983)

0% (1980)