67% (1998)

64% (2009)

58% (2002)

61% (2000)

61% (2009)

74% (2007)

59% (2014)

56% (2016)

66% (2008)

57% (2006)

59% (2016)

59% (2012)

56% (2009)

55% (2002)

29% (2001)

52% (2007)

40% (2005)

60% (2000)

59% (1997)

61% (2000)