The 19th century was the time for the first trains and trams in Amsterdam. The first train ran from Amsterdam to Haarlem in 1839. The number of people was rising, with about 250,000 living in Amsterdam in 1850, and more than 500,000 in 1900. Amsterdam was a heavy industrialised city by then. Before the Second World War, there were about 140,000 Jews living in Amsterdam. Most of those people did not survive the war. After the war, Amsterdam became a centre of tolerance and culture; to be different is not abnormal in Amsterdam. It is expected that Amsterdam will grow 12.6% until 2025. It will then hold almost 900,000 people, and the metropolitan area will hold almost 2.5 million people by then.