64% (2009)

58% (2002)

59% (1997)

68% (2004)

49% (2005)

40% (2006)

61% (2007)

58% (2006)

65% (2003)

73% (1999)

63% (2004)

56% (2007)

56% (1999)

58% (2005)

69% (2006)

62% (2004)

79% (2015)

60% (2004)

72% (2006)

60% (2006)