55% (1973)

62% (2011)

52% (1998)

70% (1976)

62% (1991)

53% (2008)

54% (2016)

56% (2019)

71% (2012)

52% (1987)

70% (2018)

59% (1991)

63% (1968)

62% (1996)

57% (2009)

63% (1955)

42% (1995)

78% (2012)

69% (1986)

58% (2006)