76% (2004)

72% (2007)

74% (2006)

49% (2000)

71% (2010)

53% (2012)

56% (2014)

58% (2008)

67% (2009)

71% (2011)

66% (2005)

61% (2001)

59% (2017)

44% (2004)

60% (2003)

64% (2008)

57% (2002)

53% (2011)

59% (2006)

41% (2001)