71% (1987)

76% (1986)

66% (1986)

68% (1973)

72% (1996)

59% (1999)

74% (1991)

60% (1975)

48% (1974)

45% (1988)

64% (2001)

53% (1988)

20% (1989)

70% (1999)

50% (1993)

77% (1997)

50% (1992)

70% (1998)

0% (1988)

33% (1987)