57% (2008)

69% (2007)

56% (2005)

63% (2004)

71% (2004)

59% (2009)

49% (2000)

62% (2011)

63% (2003)

73% (2009)

62% (2009)

60% (1999)

60% (2002)

60% (2007)

55% (2007)

50% (2009)

69% (2010)

50% (1999)

65% (2005)

70% (2013)