67% (2006)

58% (2010)

67% (2001)

68% (2004)

64% (2002)

60% (2019)

64% (1998)

65% (1986)

65% (1997)

64% (2007)

67% (1974)

75% (1956)

66% (2017)

68% (1995)

69% (1974)

63% (2002)

49% (2016)

61% (2013)

65% (2009)

67% (1975)