69% (1976)

68% (1970)

55% (2004)

62% (2018)

59% (2002)

51% (2018)

60% (2004)

60% (2021)

63% (1998)

57% (1997)

61% (2021)

65% (2013)

66% (1983)

64% (1982)

68% (1986)

69% (2018)

62% (1988)

73% (1992)

50% (2016)

60% (2015)