68% (1988)

66% (1992)

70% (2023)

76% (2022)

52% (2015)

71% (2017)

75% (2007)

64% (2005)

68% (2004)

69% (2021)

74% (2004)

64% (2003)

61% (2005)

63% (2022)

63% (2009)

70% (2011)

70% (2002)

63% (1996)

64% (2023)

65% (2004)