How have Indian cities grown in 110 yrs, from 1901 to 2011?

Kolkata, then called Calcutta, was the country's biggest city in 1901 with a population of over 15 lakh while Delhi was the seventh most populous city. The population of Delhi grew after the Partition and it overtook Chennai as the third most populous city in the 1961 Census. Mumbai overtook Kolkata as the most populous city in the 80s.