61% (1983)

69% (2014)

68% (2023)

69% (2021)

62% (1980)

78% (1967)

72% (2021)

68% (2003)

78% (1993)

65% (2023)

56% (2022)

65% (2020)

63% (2011)

63% (1992)

61% (2009)

46% (1989)

76% (1996)

65% (1978)

72% (1999)

71% (2002)