69% (1998)

68% (2002)

50% (2006)

63% (2004)

19% (2007)

70% (1992)

47% (2007)

47% (2002)

60% (2003)

60% (2003)

64% (2005)

74% (2004)

55% (2006)

48% (1999)

65% (1995)

83% (1993)

52% (2004)

33% (2006)

52% (1997)

69% (1999)