53% (1997)

44% (1998)

10% (2000)

50% (1997)

61% (1998)

44% (2000)

30% (2001)

61% (2000)

55% (2000)

15% (2009)

32% (2008)

47% (2006)

0% (2000)

70% (2003)

55% (1997)

0% (2010)

20% (2009)

42% (1997)

20% (2008)

0% (2009)