67% (2013)

62% (2011)

71% (2014)

66% (2021)

63% (1994)

61% (2003)

64% (1981)

74% (2009)

59% (1989)

62% (2013)

57% (2008)

61% (1991)

58% (2010)

61% (2006)

62% (1986)

60% (1986)

60% (2017)

70% (2001)

64% (2018)

63% (2014)