Frequencies for first 10,000 rows of a1 variable in miacc dataset :

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,761       57.61       57.61
          1 |         53        0.53       58.14
          2 |         92        0.92       59.06
          3 |         80        0.80       59.86
          4 |         70        0.70       60.56
          5 |         88        0.88       61.44
          6 |        103        1.03       62.47
          7 |         97        0.97       63.44
          8 |        117        1.17       64.61
          9 |        121        1.21       65.82
         10 |        138        1.38       67.20
         11 |        152        1.52       68.72
         12 |        168        1.68       70.40
         13 |        176        1.76       72.16
         14 |        176        1.76       73.92
         15 |        185        1.85       75.77
         16 |        176        1.76       77.53
         17 |        195        1.95       79.48
         18 |        212        2.12       81.60
         19 |        180        1.80       83.40
         20 |        174        1.74       85.14
         21 |        202        2.02       87.16
         22 |        151        1.51       88.67
         23 |        141        1.41       90.08
         24 |        136        1.36       91.44
         25 |        118        1.18       92.62
         26 |         98        0.98       93.60
         27 |        109        1.09       94.69
         28 |         93        0.93       95.62
         29 |         77        0.77       96.39
         30 |         60        0.60       96.99
         31 |         39        0.39       97.38
         32 |         40        0.40       97.78
         33 |         39        0.39       98.17
         34 |         40        0.40       98.57
         35 |         27        0.27       98.84
         36 |         24        0.24       99.08
         37 |         17        0.17       99.25
         38 |         15        0.15       99.40
         39 |          8        0.08       99.48
         40 |          7        0.07       99.55
         41 |          7        0.07       99.62
         42 |         13        0.13       99.75
         43 |          8        0.08       99.83
         44 |          1        0.01       99.84
         45 |          6        0.06       99.90
         46 |          3        0.03       99.93
         48 |          3        0.03       99.96
         49 |          1        0.01       99.97
         50 |          1        0.01       99.98
         55 |          1        0.01       99.99
         79 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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