Frequencies for first 10,000 rows of pct013c007 variable in sf12010880us35 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,162       81.62       81.62
          1 |        972        9.72       91.34
          2 |        362        3.62       94.96
          3 |        168        1.68       96.64
          4 |        114        1.14       97.78
          5 |         58        0.58       98.36
          6 |         38        0.38       98.74
          7 |         21        0.21       98.95
          8 |         13        0.13       99.08
          9 |         19        0.19       99.27
         10 |         10        0.10       99.37
         11 |          6        0.06       99.43
         12 |          7        0.07       99.50
         13 |          4        0.04       99.54
         14 |          5        0.05       99.59
         15 |          4        0.04       99.63
         16 |          2        0.02       99.65
         17 |         11        0.11       99.76
         18 |          4        0.04       99.80
         19 |          5        0.05       99.85
         20 |          3        0.03       99.88
         21 |          1        0.01       99.89
         22 |          2        0.02       99.91
         23 |          1        0.01       99.92
         24 |          1        0.01       99.93
         26 |          2        0.02       99.95
         27 |          1        0.01       99.96
         31 |          2        0.02       99.98
         44 |          1        0.01       99.99
         51 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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