Of the 308.5 million trips on SEPTA last year, roughly half were provided by a bus. That bus rider count, 155 million trips, is the lowest SEPTA has reported since 2002, the earliest year covered by the federal database, and is the worst overall ridership across all of SEPTA’s modes since 2003. That decline has come even as Philadelphia has grown by about 82,000 people, as of 2017. Regional Rail and subways both reported modest ridership gains in 2018, but not nearly enough to offset bus losses.