Global Ethylene Market Size, Trends & Growth Opportunity, By Feedstock (Ethane, Naphtha, Propane, Butane, and others), By Application (Polyethylene, Ethylene Dichloride, Ethyl Benzene, Ethylene Oxide, and Others), By End User (Building & Construction, Automotive, Textiles, Packaging, and Agrochemicals, By Region and Forecast till 2030