74% (2006)

73% (2007)

75% (2004)

71% (2010)

67% (2009)

71% (2011)

58% (2008)

53% (2012)

56% (2014)

62% (2001)

66% (2005)

44% (2004)

64% (2008)

68% (2006)

49% (2000)

59% (2017)

60% (2003)

65% (2004)

57% (2002)

60% (2006)