Frequencies for first 10,000 rows of p2 variable in miper dataset :

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,387       73.87       73.87
          1 |         45        0.45       74.32
          2 |         74        0.74       75.06
          3 |         71        0.71       75.77
          4 |         62        0.62       76.39
          5 |         65        0.65       77.04
          6 |         59        0.59       77.63
          7 |         71        0.71       78.34
          8 |         76        0.76       79.10
          9 |        107        1.07       80.17
         10 |        105        1.05       81.22
         11 |        107        1.07       82.29
         12 |        118        1.18       83.47
         13 |        102        1.02       84.49
         14 |        116        1.16       85.65
         15 |         99        0.99       86.64
         16 |        123        1.23       87.87
         17 |        130        1.30       89.17
         18 |         95        0.95       90.12
         19 |        101        1.01       91.13
         20 |        114        1.14       92.27
         21 |         84        0.84       93.11
         22 |        103        1.03       94.14
         23 |         86        0.86       95.00
         24 |         67        0.67       95.67
         25 |         78        0.78       96.45
         26 |         53        0.53       96.98
         27 |         47        0.47       97.45
         28 |         46        0.46       97.91
         29 |         33        0.33       98.24
         30 |         34        0.34       98.58
         31 |         17        0.17       98.75
         32 |         22        0.22       98.97
         33 |         17        0.17       99.14
         34 |         12        0.12       99.26
         35 |         12        0.12       99.38
         36 |          8        0.08       99.46
         37 |         12        0.12       99.58
         38 |          6        0.06       99.64
         39 |          8        0.08       99.72
         40 |          1        0.01       99.73
         41 |          6        0.06       99.79
         42 |          2        0.02       99.81
         43 |          1        0.01       99.82
         44 |          1        0.01       99.83
         45 |          4        0.04       99.87
         46 |          3        0.03       99.90
         47 |          3        0.03       99.93
         48 |          1        0.01       99.94
         49 |          1        0.01       99.95
         52 |          1        0.01       99.96
         53 |          1        0.01       99.97
         55 |          2        0.02       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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