75% (1996)

64% (2000)

65% (2011)

59% (2001)

72% (2014)

65% (1997)

60% (2003)

75% (2005)

55% (2010)

76% (1994)

70% (2007)

55% (2006)

70% (1996)

49% (2013)

69% (2007)

60% (2000)

58% (2001)

71% (2002)

58% (2017)

53% (2008)