60% (2001)

71% (2007)

68% (2002)

71% (2005)

65% (2006)

60% (2002)

69% (2010)

47% (2002)

65% (2008)

55% (2007)

62% (2004)

66% (2000)

61% (2011)

55% (2008)

71% (2002)

67% (1999)

57% (2007)

55% (2010)

63% (2006)

67% (2000)