83% (1998)

59% (2001)

72% (2000)

64% (1997)

72% (1998)

57% (2003)

54% (2006)

69% (1998)

60% (1997)

73% (1999)

57% (2003)

60% (2012)

54% (1999)

69% (2000)

59% (1998)

63% (1998)

55% (1997)

48% (2000)