28% (2004)

55% (2007)

58% (2012)

59% (2007)

66% (1998)

62% (2002)

67% (2017)

68% (2018)

55% (1977)

46% (1999)

60% (2003)

77% (1970)

60% (2017)

52% (2019)

65% (2003)

67% (2006)

72% (2018)

49% (1974)

64% (1973)

48% (2011)