The given line graph illustrates how the number of people traveling by train in Great Britain changed from 1950 to 2004/5 across three types of railway systems: National rail network, London Underground, Light rail & metro systems.
Overall, it can be seen that the national rail network had the highest number of passengers throughout the period, while the light rail & metro systems were the least used. All three systems experienced a rise in passenger numbers towards the end, after some years of decline or stability.
In 1950, the national rail started at over 1,000 million journeys, much higher than the London Underground at 700 million. From the 1960s to the 1980s, national rail numbers went down clearly, falling to around 700 million. The London Underground stayed quite stable, but also saw a small decrease during that time.
On the other hand, light rail and metro systems began later, with almost no usage until the mid-1980s. From then, they slowly increased and reached around 200 million by 2004/5.
In the last decade, all three systems witnessed a strong upward trend. The national rail network surpassed 1,100 million journeys, and the London Underground rose back to around 1,000 million. This reflects a renewed interest in public rail transport in Great Britain.