https://www.gov.uk/government/publications/light-rail-and-tram-statistics-2012-13
DfT said:Light rail use in England continued to increase in 2012/13, with both passenger journeys and vehicle miles reaching the highest levels recorded in the modern era
222 million passenger journeys were made in total on the eight systems, 18 million (9%) more than during the previous year.
Overall, growth in passenger journeys largely mirrored increased vehicle miles in 2012/13, with more services run in Docklands, Manchester and Blackpool contributing to 11% annual growth in mileage operated, the greatest single year rise since the most recent new system was opened in Nottingham in 2004.
Revenue per light rail and tram journey continued to increase in real terms, reaching 121 pence per journey in 2012/13. There was an increase in revenue per journey of 5.9 pence (5.1%) at current prices between 2011/12 and 2012/13.