60% (1979)

68% (1979)

73% (1981)

10% (1998)

60% (1981)

68% (1983)

72% (1973)

0% (1987)

70% (1972)

50% (2000)

80% (1980)

70% (1982)

67% (1980)

45% (1985)

52% (2011)

30% (1986)

35% (2001)

69% (1985)

63% (1981)

68% (1977)