Frequencies for first 10,000 rows of a2 variable in miacc dataset :

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,923       59.23       59.23
          1 |         45        0.45       59.68
          2 |         79        0.79       60.47
          3 |         76        0.76       61.23
          4 |         95        0.95       62.18
          5 |         83        0.83       63.01
          6 |         99        0.99       64.00
          7 |         95        0.95       64.95
          8 |        109        1.09       66.04
          9 |        115        1.15       67.19
         10 |        148        1.48       68.67
         11 |        142        1.42       70.09
         12 |        157        1.57       71.66
         13 |        149        1.49       73.15
         14 |        168        1.68       74.83
         15 |        191        1.91       76.74
         16 |        170        1.70       78.44
         17 |        194        1.94       80.38
         18 |        177        1.77       82.15
         19 |        167        1.67       83.82
         20 |        157        1.57       85.39
         21 |        176        1.76       87.15
         22 |        145        1.45       88.60
         23 |        156        1.56       90.16
         24 |        142        1.42       91.58
         25 |        112        1.12       92.70
         26 |        134        1.34       94.04
         27 |        116        1.16       95.20
         28 |         74        0.74       95.94
         29 |         48        0.48       96.42
         30 |         46        0.46       96.88
         31 |         38        0.38       97.26
         32 |         47        0.47       97.73
         33 |         37        0.37       98.10
         34 |         29        0.29       98.39
         35 |         31        0.31       98.70
         36 |         29        0.29       98.99
         37 |         17        0.17       99.16
         38 |         13        0.13       99.29
         39 |          9        0.09       99.38
         40 |         16        0.16       99.54
         41 |          8        0.08       99.62
         42 |          5        0.05       99.67
         43 |          7        0.07       99.74
         44 |          6        0.06       99.80
         45 |          4        0.04       99.84
         46 |          2        0.02       99.86
         47 |          1        0.01       99.87
         48 |          2        0.02       99.89
         49 |          3        0.03       99.92
         58 |          1        0.01       99.93
         61 |          1        0.01       99.94
         63 |          1        0.01       99.95
         64 |          2        0.02       99.97
         66 |          1        0.01       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016