Frequencies for po_nimg variable in p_103113_1 dataset :

    po_nimg |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,569       49.96       49.96
          1 |        785       10.99       60.95
          2 |        510        7.14       68.09
          3 |        372        5.21       73.29
          4 |        271        3.79       77.09
          5 |        230        3.22       80.31
          6 |        152        2.13       82.43
          7 |        143        2.00       84.43
          8 |        103        1.44       85.88
          9 |         89        1.25       87.12
         10 |         80        1.12       88.24
         11 |         73        1.02       89.26
         12 |         64        0.90       90.16
         13 |         51        0.71       90.87
         14 |         50        0.70       91.57
         15 |         42        0.59       92.16
         16 |         40        0.56       92.72
         17 |         22        0.31       93.03
         18 |         47        0.66       93.69
         19 |         29        0.41       94.09
         20 |         27        0.38       94.47
         21 |         25        0.35       94.82
         22 |         27        0.38       95.20
         23 |         18        0.25       95.45
         24 |         21        0.29       95.74
         25 |         12        0.17       95.91
         26 |         18        0.25       96.16
         27 |         12        0.17       96.33
         28 |         18        0.25       96.58
         29 |         11        0.15       96.74
         30 |         18        0.25       96.99
         31 |         17        0.24       97.23
         32 |          9        0.13       97.35
         33 |          6        0.08       97.44
         34 |         12        0.17       97.61
         35 |         12        0.17       97.77
         36 |          6        0.08       97.86
         37 |         12        0.17       98.03
         38 |          8        0.11       98.14
         39 |          6        0.08       98.22
         40 |          8        0.11       98.33
         41 |          7        0.10       98.43
         42 |          3        0.04       98.47
         43 |          7        0.10       98.57
         44 |          2        0.03       98.60
         45 |          5        0.07       98.67
         46 |          5        0.07       98.74
         47 |          4        0.06       98.80
         48 |          3        0.04       98.84
         49 |          5        0.07       98.91
         50 |          2        0.03       98.94
         51 |          2        0.03       98.96
         53 |          2        0.03       98.99
         54 |          2        0.03       99.02
         55 |          5        0.07       99.09
         56 |          2        0.03       99.12
         57 |          1        0.01       99.13
         58 |          2        0.03       99.16
         59 |          7        0.10       99.26
         60 |          2        0.03       99.29
         61 |          1        0.01       99.30
         62 |          3        0.04       99.34
         63 |          2        0.03       99.37
         64 |          1        0.01       99.38
         66 |          1        0.01       99.40
         67 |          1        0.01       99.41
         68 |          3        0.04       99.45
         69 |          1        0.01       99.47
         71 |          1        0.01       99.48
         73 |          1        0.01       99.50
         74 |          3        0.04       99.54
         75 |          2        0.03       99.57
         78 |          1        0.01       99.58
         79 |          1        0.01       99.59
         80 |          1        0.01       99.61
         82 |          1        0.01       99.62
         84 |          1        0.01       99.64
         85 |          1        0.01       99.65
         87 |          1        0.01       99.66
         88 |          2        0.03       99.69
         89 |          1        0.01       99.71
         90 |          1        0.01       99.72
         92 |          1        0.01       99.73
         93 |          1        0.01       99.75
         95 |          2        0.03       99.78
         97 |          1        0.01       99.79
         98 |          1        0.01       99.80
         99 |          1        0.01       99.82
        100 |          1        0.01       99.83
        103 |          1        0.01       99.85
        105 |          2        0.03       99.87
        107 |          1        0.01       99.89
        111 |          1        0.01       99.90
        112 |          1        0.01       99.92
        115 |          1        0.01       99.93
        123 |          2        0.03       99.96
        157 |          1        0.01       99.97
        186 |          1        0.01       99.99
        239 |          1        0.01      100.00
------------+-----------------------------------
      Total |      7,144      100.00

by Jean Roth , jroth@nber.org , 14 Mar 2018