82% (2011)

60% (1991)

67% (2010)

79% (2002)

79% (2006)

68% (1993)

56% (1988)

83% (2009)

67% (1994)

69% (2016)

76% (2001)

79% (2021)

83% (2015)

72% (2016)

67% (1968)

76% (2016)

78% (1987)

75% (2017)

68% (2019)

52% (1998)