68% (1998)

64% (2009)

61% (2000)

60% (2012)

74% (2007)

59% (2014)

66% (2008)

61% (2009)

56% (2016)

60% (2009)

59% (2016)

46% (2001)

57% (2009)

66% (2000)

52% (2007)

55% (2002)

56% (2006)

30% (2001)

60% (1999)

58% (2002)