Complex sentence: In 2016, Taiwan Taoyuan handled a record 42.3 million passengers and 2.1 billion kg of freight, making it the 11th busiest airport worldwide by international passenger traffic, and 6th busiest in terms of international freight traffic in 2015.
Split into simpler sentences: In 2016, Taiwan Taoyuan handled 42.3 million passengers and 2.1 billion kg of freight. The airport was the 11th busiest airport worldwide in terms of international passenger numbers, and 6th busiest in terms of international freight traffic in 2015.