55% (2023)

60% (2012)

52% (2005)

50% (1980)

56% (2011)

60% (2021)

65% (2018)

64% (1964)

60% (1969)

58% (1967)

71% (2002)

53% (2015)

30% (1960)

59% (2018)

61% (1968)

55% (1980)

59% (1962)

15% (2004)

62% (2013)

48% (1976)