68% (1998)

65% (2009)

59% (2014)

75% (2007)

66% (2008)

61% (2000)

60% (2012)

59% (2016)

60% (2000)

55% (2002)

57% (2006)

56% (2016)

61% (2009)

29% (2001)

48% (2007)

40% (2005)

52% (2007)

58% (2002)

65% (2006)

46% (2001)