68% (1993)

67% (1989)

62% (2005)

72% (2004)

78% (2012)

51% (1998)

78% (1988)

64% (2015)

76% (2010)

77% (2002)

79% (2011)

70% (2016)

77% (2009)

100% (2002)

80% (2003)

62% (2017)

40% (1999)

48% (2000)

32% (2004)

65% (2006)