What is the volume of cargo going through Dutch airports?

In 2017, airline companies carried over 1.84 million tonnes in goods into or out of the Netherlands. This is 6.8 percent up on the previous year. Virtually all air freight is handled at Amsterdam Airport Schiphol. Only Maastricht Aachen Airport processed another 87 thousand tonnes in freight in 2017.

Most air freight originates from China, the United States, Kenya, Russia or Ecuador. Together, these five countries were good for more than half of the total goods volume arriving in the Netherlands by air.
Most air cargo leaving the Netherlands is destined for China, the United States, the United Arab Emirates, Russia or Azerbaijan.

Inbound air freight consists mainly of goods that need to be delivered rapidly, e.g. flowers, fish, vegetables and fruit. Other goods often transported by air include electrical machinery and equipment and engines (including spare parts).
Cargo aircraft carried 62 percent of all air freight in 2017. Over 38 percent of air freight was carried in the cargo hold on passenger flights. This type of cargo transport is often called belly transport and is mainly used on flights going to popular passenger destinations such as the United States.