50% (1978)

48% (1983)

41% (1987)

54% (2017)

58% (1984)

59% (2009)

50% (1993)

62% (2013)

66% (2015)

52% (2015)

72% (2008)

59% (2022)

76% (2024)

64% (1984)

72% (2017)

75% (1984)

59% (2014)

59% (2011)

37% (2005)

53% (2001)