Rock star Bono pressed French leader Nicolas Sarkozy to increase aid to developing nations, the aid advocacy group DATA said. The organization, co-founded by Bono, front man of the U2 rock group, has urged France to raise development assistance to 0.7 percent of gross national income by 2012 as agreed earlier. In 2006, French aid stood at 0.31 percent of gross national income, DATA said. .