Frequencies for first 10,000 rows of expspace variable in nhamcsed2009 dataset :

   plans to |
extend ed's |
   physical |
      space |
 within the |
     next 2 |
     years? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |      1,779       17.79       17.79
          1 |      4,028       40.28       58.07
          2 |      4,193       41.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016