60% (2007)

56% (1985)

66% (1985)

40% (2009)

60% (2002)

43% (1982)

56% (1977)

54% (1974)

72% (1984)

51% (2008)

45% (1997)

52% (2003)

47% (1978)

62% (1971)

58% (1975)

53% (1976)

55% (1987)

47% (2016)

43% (2000)

60% (1992)