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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,880       58.80       58.80
          1 |         64        0.64       59.44
          2 |         98        0.98       60.42
          3 |         85        0.85       61.27
          4 |         89        0.89       62.16
          5 |         91        0.91       63.07
          6 |         85        0.85       63.92
          7 |         91        0.91       64.83
          8 |         98        0.98       65.81
          9 |        151        1.51       67.32
         10 |        143        1.43       68.75
         11 |        153        1.53       70.28
         12 |        189        1.89       72.17
         13 |        149        1.49       73.66
         14 |        168        1.68       75.34
         15 |        191        1.91       77.25
         16 |        178        1.78       79.03
         17 |        211        2.11       81.14
         18 |        178        1.78       82.92
         19 |        191        1.91       84.83
         20 |        199        1.99       86.82
         21 |        143        1.43       88.25
         22 |        154        1.54       89.79
         23 |        138        1.38       91.17
         24 |        122        1.22       92.39
         25 |        122        1.22       93.61
         26 |        102        1.02       94.63
         27 |         86        0.86       95.49
         28 |         73        0.73       96.22
         29 |         69        0.69       96.91
         30 |         50        0.50       97.41
         31 |         37        0.37       97.78
         32 |         45        0.45       98.23
         33 |         30        0.30       98.53
         34 |         17        0.17       98.70
         35 |         28        0.28       98.98
         36 |         23        0.23       99.21
         37 |         15        0.15       99.36
         38 |          8        0.08       99.44
         39 |         13        0.13       99.57
         40 |          7        0.07       99.64
         41 |          9        0.09       99.73
         42 |          3        0.03       99.76
         43 |          2        0.02       99.78
         44 |          2        0.02       99.80
         45 |          2        0.02       99.82
         46 |          3        0.03       99.85
         47 |          4        0.04       99.89
         48 |          1        0.01       99.90
         49 |          1        0.01       99.91
         50 |          2        0.02       99.93
         52 |          2        0.02       99.95
         53 |          1        0.01       99.96
         54 |          1        0.01       99.97
         55 |          2        0.02       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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