67% (1993)

62% (2005)

67% (1989)

64% (2015)

79% (2012)

75% (2010)

70% (2016)

62% (2017)

50% (1998)

79% (2011)

77% (2009)

78% (1988)

70% (2003)

71% (2004)

48% (2000)

72% (2003)

73% (2007)

66% (2006)

67% (2007)

77% (2002)