52% (1972)

59% (1995)

54% (2012)

70% (1964)

51% (1955)

71% (2017)

72% (2013)

62% (1999)

52% (1989)

52% (2010)

59% (2001)

64% (2018)

69% (2016)

61% (2003)

84% (2014)

59% (1984)

63% (2009)

61% (2012)

61% (1957)

64% (2008)