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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,667       56.67       56.67
          1 |         60        0.60       57.27
          2 |         91        0.91       58.18
          3 |         77        0.77       58.95
          4 |         86        0.86       59.81
          5 |        102        1.02       60.83
          6 |         98        0.98       61.81
          7 |        129        1.29       63.10
          8 |        145        1.45       64.55
          9 |        125        1.25       65.80
         10 |        158        1.58       67.38
         11 |        157        1.57       68.95
         12 |        180        1.80       70.75
         13 |        204        2.04       72.79
         14 |        179        1.79       74.58
         15 |        168        1.68       76.26
         16 |        201        2.01       78.27
         17 |        179        1.79       80.06
         18 |        174        1.74       81.80
         19 |        204        2.04       83.84
         20 |        175        1.75       85.59
         21 |        169        1.69       87.28
         22 |        192        1.92       89.20
         23 |        139        1.39       90.59
         24 |        153        1.53       92.12
         25 |        113        1.13       93.25
         26 |        115        1.15       94.40
         27 |        102        1.02       95.42
         28 |         74        0.74       96.16
         29 |         61        0.61       96.77
         30 |         66        0.66       97.43
         31 |         45        0.45       97.88
         32 |         29        0.29       98.17
         33 |         36        0.36       98.53
         34 |         23        0.23       98.76
         35 |         23        0.23       98.99
         36 |         26        0.26       99.25
         37 |         18        0.18       99.43
         38 |          6        0.06       99.49
         39 |          7        0.07       99.56
         40 |          9        0.09       99.65
         41 |          6        0.06       99.71
         42 |          7        0.07       99.78
         43 |          4        0.04       99.82
         44 |          2        0.02       99.84
         45 |          2        0.02       99.86
         46 |          2        0.02       99.88
         48 |          2        0.02       99.90
         49 |          1        0.01       99.91
         50 |          1        0.01       99.92
         51 |          3        0.03       99.95
         52 |          1        0.01       99.96
         57 |          1        0.01       99.97
         60 |          1        0.01       99.98
         66 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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