67% (1989)

68% (1993)

72% (2004)

63% (2005)

100% (2002)

51% (1998)

78% (1988)

76% (2010)

79% (2011)

69% (2003)

64% (2015)

77% (2009)

48% (2000)

65% (2006)

78% (2012)

62% (2017)

70% (2016)

100% (2004)

40% (1999)

51% (2008)