68% (2006)

67% (2012)

71% (2013)

61% (2009)

70% (2006)

61% (2016)

68% (2002)

40% (2008)

67% (2006)

42% (2008)

60% (2004)

57% (2003)

50% (2009)

71% (2007)

48% (2004)

66% (2007)

62% (2008)