Translate the following English sentence to French:
"All these years, Europe has been convinced that investing taxpayers' money into the old-style economy was a waste of time. This is where all the zero deficits, stability plans and so forth come from."
L' Europe, pendant toutes ces années, était convaincue qu' il ne valait pas la peine de jeter l' argent des contribuables en investissant dans l' ancienne économie.