50% (1991)

57% (2009)

50% (1959)

58% (1975)

63% (1984)

63% (1976)

48% (1993)

70% (1974)

81% (1985)

55% (1956)

68% (2009)

64% (2014)

68% (1966)

61% (2017)

43% (1975)

68% (1991)

45% (1996)

68% (1972)

0% (2004)

50% (1983)