Utilize the input text as a context reference, choose the right relationship between Airbus and aircraft from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

On aircraft numbers, Airbus predicts the fleet serving the region to increase by 70%, led by a doubling of widebodies from 290 today to over 640 by 2033.

Answer: product_or_material_produced