ยง  91.  Tonnage  statistics. The corporation shall collect and compile
  accurate records of the tonnage transported on the  canals  during  each
  season  of  navigation.  Such  data,  together  with all other necessary
  information relative  to  canal  transportation  shall  be  arranged  in
  convenient form and furnished to those interested. The corporation shall
  publish  from time to time such data and information as, in its opinion,
  will promote and encourage commerce on the canals.