By Marilyn Gerlach FRANKFURT (Reuters) – Deutsche Post is aiming for a global expansion of its parcel delivery business and wants to become world No. 1 by 2020, its CEO said, betting on a boom in the delivery of parcels ordered from websites such as Amazon.com Inc. Like other postal companies, Deutsche Post is benefiting from the rapid growth in online retail sales, seen doubling in Europe from 2012 levels to around 323 billion euros ($438 billion) by 2018, market research firm Mintel forecasts. Already the world’s biggest postal and logistics group, Deutsche Post aims to replicate that position in parcels and Chief Executive Frank Appel told the company’s annual shareholders’ meeting it would consider re-entering European markets it had exited, such as France and Britain, as well as growing further afield. “We want to apply our successful German parcel strategy in other countries,” in Asia and the Americas as well as in Europe, he told the meeting on Tuesday. “We intend to remain the number one in Germany and expand our position.