28% (1969)

56% (1956)

43% (1972)

58% (2017)

52% (1975)

46% (1989)

43% (1991)

50% (1982)

41% (1974)

55% (1977)

62% (2018)

53% (2002)

68% (2018)

57% (2006)

57% (2011)

33% (1976)

57% (1975)

67% (1991)

51% (1979)

51% (1960)