55% (1989)

50% (1986)

28% (1996)

66% (1979)

55% (1986)

60% (1973)

49% (1989)

52% (1973)

72% (1985)

55% (1988)

48% (2012)

51% (2008)

60% (1995)

62% (1985)

44% (1974)

68% (1995)

37% (1987)

67% (1989)

40% (1989)

55% (1977)