76% (2024)

62% (2021)

50% (2009)

65% (2020)

69% (2004)

58% (1985)

68% (2016)

52% (2008)

54% (1978)

63% (1988)

55% (2006)

67% (2011)

62% (2010)

67% (2014)

68% (2022)

67% (2023)

62% (1986)

64% (2015)

64% (2023)

77% (2017)