45% (2004)

65% (1987)

74% (2006)

70% (1963)

70% (1969)

61% (1991)

35% (1979)

63% (1986)

64% (1996)

70% (1975)

0% (1989)

0% (1960)

59% (1993)

71% (1987)

100% (1974)

65% (1964)

50% (1962)

60% (1978)

60% (1960)

20% (1996)