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

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,207       92.07       92.07
          1 |         18        0.18       92.25
          2 |          1        0.01       92.26
          3 |          6        0.06       92.32
          4 |          2        0.02       92.34
          5 |          7        0.07       92.41
          6 |          2        0.02       92.43
          7 |          3        0.03       92.46
          9 |         72        0.72       93.18
          . |        682        6.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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