The take below gives information about the underground railway systems in six cities.Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Given is the table which gives information on the subterranean railways in various countries. Overall, as time went by, the length of new railways shortened significantly.
To begin with, the oldest railway belongs to London and was established in 1863, whereas the most contemporary one is situated in Los Angeles and was founded in 2001. Moreover, in the 20th century, railways in Paris, Tokyo, and Washington DC were established in respectively 1900, 1927, and 1976.

Furthermore, in terms of the size, London ranks first with 394 km route, and it is followed by Paris (199 km), Tokyo (155 km), Washington DC (126 km), Los Angeles (28 km), and Kyoto (11 km). When it comes to the number of passengers who are transferred by taking advantage of railways per annum, Tokyo is ahead of the others with 1927 million customers. It is followed by Paris (1191 million), Landon (775 million), Washington DC (144 million), and Los Angeles (50 million). Interestingly, not only does Kyoto have the least length, but also it provides the least number of passengers, 45 million, with the service compared to the other nations.

To sum up, on average, with the passage of time, the size of railways and the number of clients had been decreased.