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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,967       59.67       59.67
          1 |         74        0.74       60.41
          2 |         91        0.91       61.32
          3 |         70        0.70       62.02
          4 |         64        0.64       62.66
          5 |         66        0.66       63.32
          6 |         76        0.76       64.08
          7 |         80        0.80       64.88
          8 |        110        1.10       65.98
          9 |        118        1.18       67.16
         10 |        140        1.40       68.56
         11 |        138        1.38       69.94
         12 |        146        1.46       71.40
         13 |        170        1.70       73.10
         14 |        168        1.68       74.78
         15 |        184        1.84       76.62
         16 |        190        1.90       78.52
         17 |        182        1.82       80.34
         18 |        176        1.76       82.10
         19 |        204        2.04       84.14
         20 |        166        1.66       85.80
         21 |        154        1.54       87.34
         22 |        170        1.70       89.04
         23 |        144        1.44       90.48
         24 |        138        1.38       91.86
         25 |        109        1.09       92.95
         26 |        107        1.07       94.02
         27 |         92        0.92       94.94
         28 |         83        0.83       95.77
         29 |         67        0.67       96.44
         30 |         68        0.68       97.12
         31 |         46        0.46       97.58
         32 |         30        0.30       97.88
         33 |         36        0.36       98.24
         34 |         28        0.28       98.52
         35 |         24        0.24       98.76
         36 |         23        0.23       98.99
         37 |         15        0.15       99.14
         38 |         13        0.13       99.27
         39 |         11        0.11       99.38
         40 |         14        0.14       99.52
         41 |         12        0.12       99.64
         42 |          9        0.09       99.73
         43 |          4        0.04       99.77
         44 |          5        0.05       99.82
         45 |          2        0.02       99.84
         46 |          2        0.02       99.86
         47 |          2        0.02       99.88
         49 |          1        0.01       99.89
         50 |          1        0.01       99.90
         51 |          2        0.02       99.92
         54 |          2        0.02       99.94
         60 |          2        0.02       99.96
         61 |          1        0.01       99.97
         63 |          1        0.01       99.98
         65 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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