Frequencies for first 10,000 rows of p9 variable in miper dataset :

         p9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,459       74.59       74.59
          1 |         38        0.38       74.97
          2 |         45        0.45       75.42
          3 |         56        0.56       75.98
          4 |         70        0.70       76.68
          5 |         58        0.58       77.26
          6 |         64        0.64       77.90
          7 |         57        0.57       78.47
          8 |         71        0.71       79.18
          9 |         88        0.88       80.06
         10 |         95        0.95       81.01
         11 |         91        0.91       81.92
         12 |         94        0.94       82.86
         13 |         99        0.99       83.85
         14 |        103        1.03       84.88
         15 |        124        1.24       86.12
         16 |        111        1.11       87.23
         17 |        109        1.09       88.32
         18 |        114        1.14       89.46
         19 |         87        0.87       90.33
         20 |         90        0.90       91.23
         21 |        105        1.05       92.28
         22 |         81        0.81       93.09
         23 |         88        0.88       93.97
         24 |         87        0.87       94.84
         25 |         66        0.66       95.50
         26 |         58        0.58       96.08
         27 |         77        0.77       96.85
         28 |         48        0.48       97.33
         29 |         34        0.34       97.67
         30 |         34        0.34       98.01
         31 |         26        0.26       98.27
         32 |         26        0.26       98.53
         33 |         28        0.28       98.81
         34 |         20        0.20       99.01
         35 |         19        0.19       99.20
         36 |         14        0.14       99.34
         37 |         17        0.17       99.51
         38 |         11        0.11       99.62
         39 |          7        0.07       99.69
         40 |          7        0.07       99.76
         41 |          3        0.03       99.79
         42 |          1        0.01       99.80
         43 |          5        0.05       99.85
         44 |          2        0.02       99.87
         45 |          1        0.01       99.88
         46 |          2        0.02       99.90
         47 |          1        0.01       99.91
         48 |          1        0.01       99.92
         49 |          1        0.01       99.93
         55 |          1        0.01       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