72% (1988)

68% (1997)

53% (1960)

50% (2003)

60% (2003)

68% (1998)

38% (1985)

65% (1979)

0% (1971)

60% (1968)

45% (1970)

60% (1983)

77% (1974)

55% (1956)

72% (2006)

50% (2016)

30% (1984)

60% (1981)

88% (2010)

48% (1992)