Frequencies for first 10,000 rows of spec_use variable in person dataset :

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,081       90.81       90.81
          1 |          3        0.03       90.84
          2 |          1        0.01       90.85
          3 |          1        0.01       90.86
          4 |         23        0.23       91.09
          5 |         16        0.16       91.25
          6 |         16        0.16       91.41
          7 |          7        0.07       91.48
          9 |        109        1.09       92.57
          . |        743        7.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016