Between 2019 and 2023, Amazon will have tripled the number of parcels it delivers to almost 6 billion from just 2 billion in 2019. That is a CAGR of 31% over 4-years. This amazing growth is typical Amazon and will likely continue as Amazon increases the density of its network, in-sources more of its parcel delivery (some of Amazon's deliveries are still handled by UPS) and continues its push selling its spare delivery capacity to other companies.