49% (1975)

66% (1985)

60% (2007)

56% (1985)

40% (2009)

61% (2002)

72% (1984)

43% (1982)

53% (1973)

56% (1977)

51% (2008)

54% (1974)

55% (2018)

48% (1982)

69% (1978)

58% (1975)

45% (1997)

68% (1984)

55% (1987)

20% (1976)