89% (1988)

90% (2012)

65% (1999)

38% (2012)

0% (2007)

85% (1994)

77% (2010)

71% (1999)

80% (2020)

67% (2017)

93% (1976)

70% (2007)

87% (2020)

65% (2006)

82% (2020)

80% (1986)

73% (2003)

75% (2011)

72% (2001)

0% (2007)