The Centre for Railway Information Systems (CRIS), in response to the RTI application filed by Kota-based activist Sujeet Swami, said that in the three-year period from January 1, 2017 to January 31, 2020, there were over nine-and-a-half crore passengers whose wait-listed tickets were not cancelled. Such passengers brought the Indian Railways revenue of over Rs 4,335 crore.