72% (1981)

69% (2022)

65% (2022)

66% (2023)

61% (2020)

60% (2005)

79% (1972)

56% (1996)

63% (2021)

65% (2023)

60% (1990)

60% (1988)

54% (2009)

68% (1968)

61% (2004)

45% (1994)

75% (1984)

68% (2023)

68% (2013)

68% (2014)