The chart label of "% change since 2001" is pretty unclear, but based on the quote "ridership...has dropped a staggering 23 percent since 2001", it seems to mea

The chart label of "% change since 2001" is pretty unclear, but based on the quote "ridership...has dropped a staggering 23 percent since 2001", it seems to mean "% difference from 2001", not "% change year-to-year, since 2001".