58% (1969)

74% (2000)

60% (1981)

38% (2001)

37% (1992)

62% (1987)

0% (1991)

62% (1986)

50% (1985)

30% (1992)

0% (1996)

50% (2004)

70% (2001)

0% (1977)

0% (1994)

0% (1980)

0% (1991)

70% (1995)

60% (2001)

40% (1974)