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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,669       66.69       66.69
          1 |         44        0.44       67.13
          2 |         87        0.87       68.00
          3 |         79        0.79       68.79
          4 |         68        0.68       69.47
          5 |         74        0.74       70.21
          6 |         94        0.94       71.15
          7 |         94        0.94       72.09
          8 |         96        0.96       73.05
          9 |        119        1.19       74.24
         10 |        130        1.30       75.54
         11 |        143        1.43       76.97
         12 |        144        1.44       78.41
         13 |        127        1.27       79.68
         14 |        147        1.47       81.15
         15 |        165        1.65       82.80
         16 |        177        1.77       84.57
         17 |        180        1.80       86.37
         18 |        138        1.38       87.75
         19 |        135        1.35       89.10
         20 |        152        1.52       90.62
         21 |        147        1.47       92.09
         22 |        126        1.26       93.35
         23 |        104        1.04       94.39
         24 |         92        0.92       95.31
         25 |         74        0.74       96.05
         26 |         57        0.57       96.62
         27 |         62        0.62       97.24
         28 |         57        0.57       97.81
         29 |         46        0.46       98.27
         30 |         38        0.38       98.65
         31 |         29        0.29       98.94
         32 |         17        0.17       99.11
         33 |         16        0.16       99.27
         34 |         12        0.12       99.39
         35 |         11        0.11       99.50
         36 |         11        0.11       99.61
         37 |          6        0.06       99.67
         38 |          7        0.07       99.74
         39 |          4        0.04       99.78
         40 |          5        0.05       99.83
         41 |          1        0.01       99.84
         42 |          1        0.01       99.85
         43 |          4        0.04       99.89
         44 |          2        0.02       99.91
         46 |          2        0.02       99.93
         47 |          1        0.01       99.94
         48 |          3        0.03       99.97
         52 |          1        0.01       99.98
         56 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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