75% (1992)

70% (1992)

58% (1982)

60% (1971)

80% (1969)

66% (1999)

60% (1987)

45% (1969)

72% (1979)

0% (1991)

63% (1996)

60% (1974)

79% (1985)

60% (2002)

50% (1969)

40% (1978)

67% (1979)

55% (1984)

60% (1987)

60% (1979)