51% (1986)

75% (2009)

60% (2010)

62% (2023)

60% (2021)

64% (2013)

53% (2018)

49% (1977)

67% (1990)

46% (1975)

73% (2017)

72% (2023)

73% (2010)

71% (1991)

62% (2010)

65% (2009)

59% (1989)

39% (2013)

58% (2000)

68% (2018)