67% (1989)

67% (1993)

79% (2012)

70% (2016)

50% (1998)

62% (2005)

76% (2010)

71% (2004)

62% (2017)

64% (2015)

100% (2002)

77% (1988)

77% (2009)

79% (2011)

69% (2003)

66% (2006)

77% (2002)

75% (2012)

72% (2015)

73% (2007)