75% (1996)

64% (2000)

65% (2011)

60% (2000)

65% (1997)

58% (2001)

75% (2005)

48% (2013)

60% (2003)

55% (2006)

62% (2007)

58% (2014)

76% (2001)

54% (2010)

71% (1996)

68% (2007)

60% (1998)

71% (2002)

54% (2009)

65% (2004)