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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,849       58.49       58.49
          1 |         46        0.46       58.95
          2 |         81        0.81       59.76
          3 |         87        0.87       60.63
          4 |         88        0.88       61.51
          5 |         89        0.89       62.40
          6 |         98        0.98       63.38
          7 |        101        1.01       64.39
          8 |        126        1.26       65.65
          9 |        132        1.32       66.97
         10 |        144        1.44       68.41
         11 |        137        1.37       69.78
         12 |        167        1.67       71.45
         13 |        171        1.71       73.16
         14 |        169        1.69       74.85
         15 |        183        1.83       76.68
         16 |        191        1.91       78.59
         17 |        192        1.92       80.51
         18 |        208        2.08       82.59
         19 |        179        1.79       84.38
         20 |        172        1.72       86.10
         21 |        184        1.84       87.94
         22 |        152        1.52       89.46
         23 |        128        1.28       90.74
         24 |        135        1.35       92.09
         25 |        102        1.02       93.11
         26 |        111        1.11       94.22
         27 |        114        1.14       95.36
         28 |         80        0.80       96.16
         29 |         62        0.62       96.78
         30 |         51        0.51       97.29
         31 |         43        0.43       97.72
         32 |         39        0.39       98.11
         33 |         37        0.37       98.48
         34 |         29        0.29       98.77
         35 |         26        0.26       99.03
         36 |         21        0.21       99.24
         37 |         13        0.13       99.37
         38 |         15        0.15       99.52
         39 |          8        0.08       99.60
         40 |         10        0.10       99.70
         41 |          4        0.04       99.74
         42 |          5        0.05       99.79
         43 |          5        0.05       99.84
         44 |          3        0.03       99.87
         45 |          4        0.04       99.91
         47 |          1        0.01       99.92
         48 |          3        0.03       99.95
         50 |          1        0.01       99.96
         51 |          2        0.02       99.98
         52 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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