The financial capital of India, Mumbai, is the second most densely populated city in the world with about 20 million people living in the city. The situation worsens when the monsoon reaches the city and creates havoc in the form of water-logging, every single year. The average street width of Mumbai has reduced to 8.59 meters in 2001-2014 from 11.56 meters in 1991-2001, causing traffic jams almost everywhere across the city. Here’s how Mumbai has evolved over the years.