Frequencies for p8 variable in miper dataset :

         p8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        586       70.94       70.94
          1 |          2        0.24       71.19
          2 |         12        1.45       72.64
          3 |          6        0.73       73.37
          4 |          7        0.85       74.21
          5 |         11        1.33       75.54
          6 |          7        0.85       76.39
          7 |          5        0.61       77.00
          8 |          8        0.97       77.97
          9 |         12        1.45       79.42
         10 |          6        0.73       80.15
         11 |          9        1.09       81.23
         12 |          9        1.09       82.32
         13 |          5        0.61       82.93
         14 |         10        1.21       84.14
         15 |         12        1.45       85.59
         16 |         10        1.21       86.80
         17 |          7        0.85       87.65
         18 |         11        1.33       88.98
         19 |         11        1.33       90.31
         20 |          5        0.61       90.92
         21 |          7        0.85       91.77
         22 |          5        0.61       92.37
         23 |          8        0.97       93.34
         24 |         10        1.21       94.55
         25 |          8        0.97       95.52
         26 |          4        0.48       96.00
         27 |          7        0.85       96.85
         28 |          7        0.85       97.70
         29 |          1        0.12       97.82
         30 |          3        0.36       98.18
         31 |          1        0.12       98.31
         32 |          6        0.73       99.03
         34 |          1        0.12       99.15
         35 |          3        0.36       99.52
         36 |          1        0.12       99.64
         40 |          2        0.24       99.88
         41 |          1        0.12      100.00
------------+-----------------------------------
      Total |        826      100.00

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