Frequencies for first 10,000 rows of a9 variable in miacc dataset :

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,188       61.88       61.88
          1 |         45        0.45       62.33
          2 |         83        0.83       63.16
          3 |         81        0.81       63.97
          4 |         75        0.75       64.72
          5 |         86        0.86       65.58
          6 |         97        0.97       66.55
          7 |         85        0.85       67.40
          8 |        123        1.23       68.63
          9 |        130        1.30       69.93
         10 |        127        1.27       71.20
         11 |        124        1.24       72.44
         12 |        150        1.50       73.94
         13 |        134        1.34       75.28
         14 |        167        1.67       76.95
         15 |        185        1.85       78.80
         16 |        182        1.82       80.62
         17 |        173        1.73       82.35
         18 |        212        2.12       84.47
         19 |        141        1.41       85.88
         20 |        133        1.33       87.21
         21 |        157        1.57       88.78
         22 |        140        1.40       90.18
         23 |        132        1.32       91.50
         24 |        132        1.32       92.82
         25 |        108        1.08       93.90
         26 |         85        0.85       94.75
         27 |         95        0.95       95.70
         28 |         68        0.68       96.38
         29 |         54        0.54       96.92
         30 |         42        0.42       97.34
         31 |         46        0.46       97.80
         32 |         41        0.41       98.21
         33 |         28        0.28       98.49
         34 |         24        0.24       98.73
         35 |         17        0.17       98.90
         36 |         13        0.13       99.03
         37 |         18        0.18       99.21
         38 |         15        0.15       99.36
         39 |         10        0.10       99.46
         40 |         11        0.11       99.57
         41 |          5        0.05       99.62
         42 |          3        0.03       99.65
         43 |          2        0.02       99.67
         44 |          2        0.02       99.69
         45 |          7        0.07       99.76
         46 |          3        0.03       99.79
         47 |          7        0.07       99.86
         48 |          4        0.04       99.90
         49 |          3        0.03       99.93
         50 |          1        0.01       99.94
         51 |          1        0.01       99.95
         53 |          1        0.01       99.96
         55 |          1        0.01       99.97
         58 |          1        0.01       99.98
         60 |          1        0.01       99.99
         70 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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