67% (1989)

72% (2004)

79% (2011)

68% (1993)

72% (2006)

100% (2002)

62% (2005)

52% (1998)

78% (1988)

70% (2016)

76% (2010)

64% (2015)

62% (2002)

62% (2017)

78% (2012)

78% (2009)

52% (1970)

66% (2006)

51% (2008)

75% (2009)