68% (1993)

66% (1989)

62% (2005)

72% (2004)

51% (1998)

79% (2012)

77% (1988)

64% (2015)

79% (2011)

77% (2009)

76% (2010)

77% (2002)

70% (2016)

80% (2003)

48% (2000)

40% (1999)

85% (2003)

70% (2006)

62% (2017)

100% (2002)