70% (2004)

76% (2010)

65% (1991)

76% (2015)

70% (2011)

73% (2007)

30% (1981)

78% (2013)

70% (2018)

75% (2012)

82% (1992)

67% (1999)

74% (1995)

65% (1992)

69% (2012)

39% (1975)

73% (2001)

76% (2020)

59% (1981)

68% (2008)