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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,391       73.91       73.91
          1 |         37        0.37       74.28
          2 |         47        0.47       74.75
          3 |         67        0.67       75.42
          4 |         65        0.65       76.07
          5 |         72        0.72       76.79
          6 |         69        0.69       77.48
          7 |         64        0.64       78.12
          8 |         74        0.74       78.86
          9 |         90        0.90       79.76
         10 |         89        0.89       80.65
         11 |         86        0.86       81.51
         12 |        103        1.03       82.54
         13 |         99        0.99       83.53
         14 |        104        1.04       84.57
         15 |        136        1.36       85.93
         16 |        116        1.16       87.09
         17 |        100        1.00       88.09
         18 |        122        1.22       89.31
         19 |        104        1.04       90.35
         20 |         91        0.91       91.26
         21 |        104        1.04       92.30
         22 |         82        0.82       93.12
         23 |         83        0.83       93.95
         24 |         94        0.94       94.89
         25 |         68        0.68       95.57
         26 |         54        0.54       96.11
         27 |         77        0.77       96.88
         28 |         42        0.42       97.30
         29 |         40        0.40       97.70
         30 |         29        0.29       97.99
         31 |         30        0.30       98.29
         32 |         31        0.31       98.60
         33 |         18        0.18       98.78
         34 |         21        0.21       98.99
         35 |         19        0.19       99.18
         36 |         12        0.12       99.30
         37 |         15        0.15       99.45
         38 |          9        0.09       99.54
         39 |          6        0.06       99.60
         40 |         10        0.10       99.70
         41 |          3        0.03       99.73
         42 |          3        0.03       99.76
         43 |          4        0.04       99.80
         44 |          2        0.02       99.82
         45 |          1        0.01       99.83
         46 |          3        0.03       99.86
         47 |          1        0.01       99.87
         48 |          2        0.02       99.89
         49 |          1        0.01       99.90
         53 |          1        0.01       99.91
         55 |          1        0.01       99.92
         56 |          2        0.02       99.94
         61 |          1        0.01       99.95
         63 |          1        0.01       99.96
         64 |          2        0.02       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016