66% (1985)

40% (2009)

60% (2007)

61% (2002)

56% (1985)

68% (1978)

47% (2016)

55% (2018)

56% (1977)

50% (1975)

58% (1975)

57% (1974)

53% (1973)

71% (1984)

53% (1976)

48% (1997)

51% (2008)

68% (1984)

62% (1971)

55% (1987)