The provided bar charts illustrate the railway route length and annual passenger numbers across six European cities, ranging from Paris in 1863 to Berlin in 2001. Overall, there is a clear disparity between the older and newer systems, with the former generally possessing longer routes and higher passenger counts.
Regarding the length of the routes, Paris 1863 leads significantly with approximately 395 kilometres, followed by Stockholm 1900 at 200 kilometres and Lisbon 1927 at 155 kilometres. In contrast, the systems in Rome, Madrid, and Berlin are considerably smaller, with Madrid 1981 having the shortest route at only 10 kilometres, while Berlin 2001 measures 30 kilometres.
In terms of passenger numbers, Lisbon 1927 stands out as the busiest system, handling 1,925 million passengers annually. Stockholm 1900 and Paris 1863 also record substantial figures of 1,200 million and 775 million passengers respectively. Conversely, the more modern systems in Rome, Madrid, and Berlin show much lower usage, with Rome 1976 serving 150 million passengers, and both Madrid and Berlin recording only 50 million passengers per year, highlighting a stark contrast in scale compared to the earlier established networks.