69% (2024)

64% (2016)

80% (1995)

75% (2014)

78% (2004)

74% (1993)

69% (2001)

68% (2017)

75% (2001)

75% (2013)

64% (2008)

70% (2022)

59% (2005)

68% (2006)

63% (1997)

66% (2012)

61% (1998)

67% (1991)

52% (1988)

0% (1970)