76% (2004)

74% (2006)

73% (2007)

71% (2011)

72% (2010)

58% (2008)

67% (2009)

53% (2012)

61% (2001)

56% (2014)

49% (2000)

44% (2004)

66% (2005)

64% (2008)

60% (2003)

68% (2006)

59% (2017)

60% (2013)

59% (2006)

56% (2002)