0% (1983)

70% (1996)

52% (1989)

20% (2003)

10% (1993)

50% (1997)

45% (1985)

40% (1974)

48% (1999)

62% (1988)

20% (1970)

65% (1968)

0% (2004)

59% (1971)

60% (1984)

65% (1986)

50% (1987)

64% (1971)

71% (1999)

57% (1999)