50% (1970)

70% (1967)

68% (1987)

0% (1997)

61% (1988)

50% (1972)

20% (2013)

90% (2018)

69% (1979)

50% (1975)

0% (1989)

63% (1975)

0% (1986)

0% (1983)

64% (2003)

72% (1969)

0% (1976)

64% (1995)

53% (1962)

62% (2004)