48% (1970)

64% (2019)

47% (1980)

55% (1975)

30% (1985)

65% (1990)

55% (1968)

68% (1991)

49% (1970)

55% (1984)

58% (1985)

48% (1959)

30% (1987)

56% (2016)

59% (2009)

0% (1993)

0% (1990)

0% (1989)

43% (1988)

60% (2003)