61% (1981)

65% (1995)

55% (2002)

63% (2019)

68% (2020)

69% (2022)

62% (2015)

70% (2021)

69% (2000)

35% (2018)

65% (2011)

68% (1961)

63% (2005)

73% (2022)

76% (1969)

64% (2013)

50% (2023)

46% (1992)

69% (2013)

15% (2019)