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

         p2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,457       74.57       74.57
          1 |         31        0.31       74.88
          2 |         66        0.66       75.54
          3 |         57        0.57       76.11
          4 |         52        0.52       76.63
          5 |         51        0.51       77.14
          6 |         87        0.87       78.01
          7 |         74        0.74       78.75
          8 |         73        0.73       79.48
          9 |         80        0.80       80.28
         10 |         90        0.90       81.18
         11 |         93        0.93       82.11
         12 |        102        1.02       83.13
         13 |        108        1.08       84.21
         14 |        106        1.06       85.27
         15 |        100        1.00       86.27
         16 |        112        1.12       87.39
         17 |        113        1.13       88.52
         18 |        116        1.16       89.68
         19 |        109        1.09       90.77
         20 |        100        1.00       91.77
         21 |        110        1.10       92.87
         22 |         98        0.98       93.85
         23 |         86        0.86       94.71
         24 |         64        0.64       95.35
         25 |         70        0.70       96.05
         26 |         41        0.41       96.46
         27 |         59        0.59       97.05
         28 |         45        0.45       97.50
         29 |         34        0.34       97.84
         30 |         44        0.44       98.28
         31 |         26        0.26       98.54
         32 |         24        0.24       98.78
         33 |         21        0.21       98.99
         34 |         20        0.20       99.19
         35 |         13        0.13       99.32
         36 |         10        0.10       99.42
         37 |          8        0.08       99.50
         38 |         12        0.12       99.62
         39 |          7        0.07       99.69
         40 |          6        0.06       99.75
         41 |          3        0.03       99.78
         42 |          5        0.05       99.83
         43 |          5        0.05       99.88
         44 |          2        0.02       99.90
         45 |          1        0.01       99.91
         46 |          1        0.01       99.92
         51 |          2        0.02       99.94
         52 |          1        0.01       99.95
         55 |          1        0.01       99.96
         58 |          1        0.01       99.97
         63 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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