Production industry constitutes a small part of the economy of Utrecht. <answer>The economy of Utrecht depends for a large part on the several large institutions located in the city</answer>. It is the centre of the Dutch railroad network and the location of the head office of Nederlandse Spoorwegen. ProRail is headquartered in The De Inktpot (nl) (The Inkpot) – the largest brick building in the Netherlands (the "UFO" featured on its façade stems from an art program in 2000). Rabobank, a large bank, has its headquarters in Utrecht.
What does Utrecht's economy  depend on 
The economy of Utrecht depends for a large part on the several large institutions located in the city