Passage: Since its inception in 1957, the Institute has provided postgraduate education to numerous professionals (engineers and scientists) almost entirely from developing/transitional countries, from over  190 countries. It has also graduated over 100 PhD candidates and executed numerous research and capacity development projects throughout the world. Many of the alumni have reached senior positions in their home countries upon return and remain key links in the global water network.

Question: How many PhD candidates graduated?
over 100