74% (1993)

71% (2001)

67% (2015)

69% (2011)

71% (2023)

64% (2021)

67% (2006)

72% (1989)

74% (1998)

72% (2018)

72% (2024)

70% (1991)

70% (2024)

63% (2003)

58% (1995)

66% (1990)

54% (1996)

68% (1987)

56% (1988)

57% (2013)