70% (1973)

50% (2004)

42% (1989)

73% (1987)

70% (1985)

80% (1975)

64% (1989)

80% (2008)

60% (1973)

0% (1976)

0% (1958)

90% (1976)

36% (1982)

60% (1991)

68% (1987)

60% (1981)

85% (1980)

0% (1979)

70% (1992)

50% (1964)