This task is to translate a news commentary given in English language into French language. Translate the input statement into the output language while preserving the numberical values, special characters and proper nouns and context of the commentary done.

Example input: Since their articles appeared, the price of gold has moved up still further. Gold prices even hit a record-high $1,300 recently.
Example output: Depuis la parution de leurs articles, le cours de l’or a encore grimpé, pour atteindre récemment un plus haut historique de 1300 dollars l’once.
Example explanation: The given translation is accurate and precise, and preserves the meaning of the commentary.
Q: Simple economic models, often quoted in the media, show that unconstrained global warming would cost a substantial 2% of GDP in the rich world by the end of the century.
A:
Dans les modèles économiques simples, que les médias citent souvent en référence, le coût du réchauffement – si on n’y met aucun frein – est estimé à 2% du PIB pour le monde riche, d’ici la fin du siècle.