70% (1958)

68% (1981)

57% (1993)

75% (1986)

58% (2002)

71% (1972)

47% (2009)

67% (2013)

79% (2010)

60% (1993)

53% (2017)

47% (1977)

58% (1987)

62% (2007)

59% (1999)

55% (1982)

66% (2006)

68% (1979)

60% (2012)

63% (2022)