70% (2004)

90% (2002)

0% (1997)

77% (2000)

52% (2006)

0% (1996)

60% (2002)

74% (1995)

100% (2003)

75% (1996)

50% (1999)

40% (2001)

55% (2004)

55% (2005)

87% (2003)

70% (2005)

78% (2000)

0% (2003)

70% (2006)

10% (1995)