Frequencies for first 10,000 rows of pct012k011 variable in sf12010880us30 dataset :

    8 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,261       92.61       92.61
          1 |        560        5.60       98.21
          2 |        121        1.21       99.42
          3 |         29        0.29       99.71
          4 |         14        0.14       99.85
          5 |          4        0.04       99.89
          6 |          2        0.02       99.91
          7 |          5        0.05       99.96
         12 |          1        0.01       99.97
         13 |          2        0.02       99.99
         23 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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