61% (1998)

50% (1997)

32% (2008)

53% (1997)

44% (2000)

15% (2009)

55% (2000)

10% (2000)

70% (2003)

61% (2000)

47% (2006)

55% (1997)

0% (2000)

30% (2001)

44% (1998)

42% (1997)

20% (1997)

20% (2008)

20% (2009)

0% (2010)