Frequencies for measurestartdate variable in hqi_state_mspb dataset :

    Measure |
 Start Date |      Freq.     Percent        Cum.
------------+-----------------------------------
  01jan2014 |         56      100.00      100.00
------------+-----------------------------------
      Total |         56      100.00

by Jean Roth , jroth@nber.org , 15 Nov 2016