53% (1997)

55% (1997)

10% (2000)

44% (1998)

30% (2001)

47% (2006)

42% (1997)

61% (2000)

55% (2000)

44% (2000)

32% (2008)

61% (1998)

50% (1997)

65% (2003)

20% (1997)

15% (2009)

0% (2010)

0% (2000)

20% (2008)

20% (2009)