67% (1989)

68% (1993)

64% (2015)

63% (2005)

51% (1998)

72% (2004)

100% (2002)

78% (1988)

76% (2010)

77% (2009)

40% (1999)

69% (2003)

75% (2009)

85% (2003)

79% (2011)

78% (2012)

62% (2017)

70% (2016)

48% (2000)

71% (2017)