74% (2006)

59% (2013)

76% (1992)

75% (2018)

65% (2020)

78% (1989)

74% (2002)

68% (1998)

58% (2015)

66% (1986)

64% (1991)

62% (2008)

65% (1999)

46% (2001)

65% (1990)

63% (1995)

67% (1999)

68% (1994)

52% (2004)

56% (2019)