63% (1998)

73% (2008)

50% (1996)

67% (2013)

57% (2010)

69% (2005)

57% (2009)

68% (2011)

52% (2013)

56% (2005)

48% (2006)

68% (2007)

54% (2007)

61% (2002)

64% (1997)

57% (1999)

57% (1996)

67% (2005)

61% (2003)

56% (2002)