0% (2006)

47% (2007)

40% (2004)

42% (2006)

30% (2008)

40% (2009)

43% (2007)

45% (2006)

49% (2005)

35% (2006)

60% (2006)

47% (2006)

30% (2008)

80% (2006)

77% (2007)

45% (2008)

60% (2006)

50% (2006)

48% (2005)

42% (2007)