NS withdrew an overall average of 11.4% of the fleet for maintenance, repairs and refurbishment on any given day in 2017 (2016: 9.7%). This means that we performed better than the norm of 13.6% per annum and that we met the target that is needed for the timetable. The main reasons for the increase were the influx of new trains such as FLIRT and the reintroduction of reserve trains (DDAR and DDM1). In both cases, this leads to more withdrawals than in the case of familiar rolling stock. There were also more withdrawals for long-term maintenance and refurbishment and we had to deal with more damage incidents.