When asked in May 2006:
Now, on another subject...Some people think that suicide bombing and other forms of violence against civilian targets are justified in order to defend Islam from its enemies. Other people believe that, no matter what the reason, this kind of violence is never justified. Do you personally feel that this kind of violence is often justified to defend Islam, sometimes justified, rarely justified, or never justified?
Muslims is France responded:
6% "often"
10% "sometimes"
19% "rarely"
64% "never"
For the subset that were 18-29 years old:
19% "often" or "sometimes"
23% "rarely"
57% "never"
All the data in the OP graph match the "ever justified" column of the table "More Support for Suicide Bombing
Among Younger Muslims" which is on page 54 (page 60 of the pdf) of the report Muslim Americans