Frequencies for first 10,000 rows of pct012m010 variable in sf12010880us32 dataset :

    7 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,870       98.70       98.70
          1 |        120        1.20       99.90
          2 |          9        0.09       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017