75% (2024)

64% (2022)

53% (2023)

67% (2020)

49% (2009)

70% (2019)

64% (2011)

52% (2022)

68% (2020)

70% (2013)

59% (1990)

64% (2016)

68% (2021)

64% (2007)

69% (2013)

66% (2001)

60% (1976)

73% (2015)

35% (2010)

64% (1987)