Frequencies for first 10,000 rows of a3 variable in miacc dataset :

         a3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,806       48.06       48.06
          1 |         48        0.48       48.54
          2 |         96        0.96       49.50
          3 |         61        0.61       50.11
          4 |        101        1.01       51.12
          5 |        110        1.10       52.22
          6 |        115        1.15       53.37
          7 |        145        1.45       54.82
          8 |        151        1.51       56.33
          9 |        144        1.44       57.77
         10 |        177        1.77       59.54
         11 |        163        1.63       61.17
         12 |        228        2.28       63.45
         13 |        222        2.22       65.67
         14 |        258        2.58       68.25
         15 |        233        2.33       70.58
         16 |        250        2.50       73.08
         17 |        244        2.44       75.52
         18 |        249        2.49       78.01
         19 |        233        2.33       80.34
         20 |        219        2.19       82.53
         21 |        218        2.18       84.71
         22 |        247        2.47       87.18
         23 |        172        1.72       88.90
         24 |        183        1.83       90.73
         25 |        163        1.63       92.36
         26 |        143        1.43       93.79
         27 |        105        1.05       94.84
         28 |         75        0.75       95.59
         29 |         64        0.64       96.23
         30 |         62        0.62       96.85
         31 |         69        0.69       97.54
         32 |         46        0.46       98.00
         33 |         37        0.37       98.37
         34 |         30        0.30       98.67
         35 |         24        0.24       98.91
         36 |         15        0.15       99.06
         37 |         14        0.14       99.20
         38 |         20        0.20       99.40
         39 |         12        0.12       99.52
         40 |          8        0.08       99.60
         41 |          5        0.05       99.65
         42 |          7        0.07       99.72
         43 |          7        0.07       99.79
         44 |          2        0.02       99.81
         45 |          4        0.04       99.85
         46 |          2        0.02       99.87
         47 |          2        0.02       99.89
         48 |          4        0.04       99.93
         49 |          1        0.01       99.94
         50 |          1        0.01       99.95
         53 |          2        0.02       99.97
         62 |          1        0.01       99.98
         67 |          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