60% (2000)

70% (2005)

20% (2010)

42% (2007)

83% (2003)

56% (2009)

90% (1992)

0% (1998)

70% (2001)

50% (2011)

60% (2003)

70% (2001)

50% (1999)

70% (2004)

50% (2001)

0% (1999)

0% (2000)

0% (2003)

0% (2005)