Frequencies for first 10,000 rows of p9 variable in miper dataset :

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,460       74.60       74.60
          1 |         44        0.44       75.04
          2 |         60        0.60       75.64
          3 |         58        0.58       76.22
          4 |         63        0.63       76.85
          5 |         66        0.66       77.51
          6 |         61        0.61       78.12
          7 |         67        0.67       78.79
          8 |         81        0.81       79.60
          9 |         95        0.95       80.55
         10 |         94        0.94       81.49
         11 |        100        1.00       82.49
         12 |         84        0.84       83.33
         13 |        115        1.15       84.48
         14 |        124        1.24       85.72
         15 |        113        1.13       86.85
         16 |        134        1.34       88.19
         17 |        109        1.09       89.28
         18 |        110        1.10       90.38
         19 |        116        1.16       91.54
         20 |         90        0.90       92.44
         21 |         94        0.94       93.38
         22 |         96        0.96       94.34
         23 |         70        0.70       95.04
         24 |         81        0.81       95.85
         25 |         56        0.56       96.41
         26 |         55        0.55       96.96
         27 |         48        0.48       97.44
         28 |         45        0.45       97.89
         29 |         32        0.32       98.21
         30 |         32        0.32       98.53
         31 |         26        0.26       98.79
         32 |         19        0.19       98.98
         33 |         17        0.17       99.15
         34 |         15        0.15       99.30
         35 |          7        0.07       99.37
         36 |         11        0.11       99.48
         37 |         11        0.11       99.59
         38 |          6        0.06       99.65
         39 |          5        0.05       99.70
         40 |          8        0.08       99.78
         41 |          1        0.01       99.79
         42 |          4        0.04       99.83
         43 |          2        0.02       99.85
         44 |          2        0.02       99.87
         45 |          3        0.03       99.90
         46 |          1        0.01       99.91
         47 |          1        0.01       99.92
         48 |          1        0.01       99.93
         49 |          1        0.01       99.94
         51 |          1        0.01       99.95
         58 |          1        0.01       99.96
         61 |          1        0.01       99.97
         65 |          1        0.01       99.98
         68 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016