Frequencies for first 10,000 rows of pct012o003 variable in sf12000860us30 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,989       59.89       59.89
          1 |      1,311       13.11       73.00
          2 |        663        6.63       79.63
          3 |        426        4.26       83.89
          4 |        308        3.08       86.97
          5 |        235        2.35       89.32
          6 |        186        1.86       91.18
          7 |        142        1.42       92.60
          8 |        129        1.29       93.89
          9 |         96        0.96       94.85
         10 |         78        0.78       95.63
         11 |         76        0.76       96.39
         12 |         63        0.63       97.02
         13 |         48        0.48       97.50
         14 |         39        0.39       97.89
         15 |         25        0.25       98.14
         16 |         29        0.29       98.43
         17 |         26        0.26       98.69
         18 |         18        0.18       98.87
         19 |         20        0.20       99.07
         20 |          9        0.09       99.16
         21 |         16        0.16       99.32
         22 |         10        0.10       99.42
         23 |          8        0.08       99.50
         24 |          8        0.08       99.58
         25 |          7        0.07       99.65
         26 |          5        0.05       99.70
         27 |          4        0.04       99.74
         28 |          5        0.05       99.79
         29 |          6        0.06       99.85
         30 |          3        0.03       99.88
         31 |          1        0.01       99.89
         33 |          2        0.02       99.91
         34 |          1        0.01       99.92
         36 |          1        0.01       99.93
         37 |          1        0.01       99.94
         40 |          1        0.01       99.95
         43 |          1        0.01       99.96
         46 |          1        0.01       99.97
         48 |          1        0.01       99.98
         54 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017