Back

1-2/2/2016 (Second follow-up survey) (Chinese only) 14-15/1/2015 (Follow-up survey) (Chinese only) 13/1/2016 (Instant survey) (Chinese only) 3-4/2/2015 (Second follow-up survey) (Chinese only) 15-16/1/2015 (Follow-up survey) (Chinese only) 14/1/2015 (Instant survey) (Chinese only) 28-29/1/2014 (Second follow-up survey) (Chinese only) 16-17/1/2014 (Follow-up survey) (Chinese only) 15/1/2014 (Instant survey) (Chinese only) 22-24/1/2013 (Second follow-up survey) (Chinese only) 17-18/1/2013 (Follow-up survey) (Chinese only) 16/1/2013 (Instant survey) (Chinese only) 17-20/10/2011 (Second follow-up survey) (Chinese only) 13-14/10/2011 (Follow-up survey) (Chinese only) 12/10/2011 (Instant survey) (Chinese only) 26-27/10/2010 (Second follow-up survey) (Chinese only) 14-16/10/2010 (Follow-up survey) (Chinese only) 13/10/2010 (Instant survey) (Chinese only) 20-26/10/2009 (Second follow-up survey) (Chinese only) 15-17/10/2009 (Follow-up survey) (Chinese only) 14/10/2009 (Instant survey) (Chinese only) 27-29/10/2008 (Second follow-up survey) (Chinese only) 17-19/10/2008 (Follow-up survey) (Chinese only) 15/10/2008 (Instant survey) (Chinese only) 22-23/10/2007 (Follow-up survey) (Chinese only) 10/10/2007 (Instant survey) (Chinese only) 23-24/10/2006 (Follow-up survey) (Chinese only) 11/10/2006 (Instant survey) (Chinese only) 25-27/10/2005 (Follow-up survey) (Chinese only) 12/10/2005 (Instant survey) (Chinese only) 27-31/1/2005 (Follow-up survey) (Chinese only) 12/1/2005 (Instant survey) (Chinese only) 14-16/1/2004 (Follow-up survey) (Chinese only) 7/1/2004 (Instant survey) (Chinese only) 23-28/1/2003 (Follow-up survey) (Chinese only) 8-9/1/2003 (Instant survey) (Chinese only) 21-23/10/2001 (Follow-up survey) (Chinese only) 10/10/2001 (Instant survey) (Chinese only) 23-25/10/2000 (Follow-up survey) (Chinese only) 11/10/2000 (Instant survey) (Chinese only) 22/10/1999 (Second follow-up survey) (Chinese only) 11,16/10/1999 (First follow-up survey) (Chinese only) 6/10/1999 (Instant survey) (Chinese only) 20/10/1998 (Follow-up survey) (Chinese only) 7/10/1998 (Instant survey) (Chinese only) 14-15/10/1997 (Follow-up survey) (Chinese only) 8/10/1997 (Instant survey) (Chinese only)