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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,920       59.20       59.20
          1 |         68        0.68       59.88
          2 |         80        0.80       60.68
          3 |         79        0.79       61.47
          4 |         88        0.88       62.35
          5 |         90        0.90       63.25
          6 |         93        0.93       64.18
          7 |        122        1.22       65.40
          8 |        116        1.16       66.56
          9 |        135        1.35       67.91
         10 |        143        1.43       69.34
         11 |        133        1.33       70.67
         12 |        176        1.76       72.43
         13 |        146        1.46       73.89
         14 |        178        1.78       75.67
         15 |        158        1.58       77.25
         16 |        187        1.87       79.12
         17 |        180        1.80       80.92
         18 |        188        1.88       82.80
         19 |        180        1.80       84.60
         20 |        167        1.67       86.27
         21 |        163        1.63       87.90
         22 |        159        1.59       89.49
         23 |        141        1.41       90.90
         24 |        128        1.28       92.18
         25 |        108        1.08       93.26
         26 |        127        1.27       94.53
         27 |         94        0.94       95.47
         28 |         74        0.74       96.21
         29 |         67        0.67       96.88
         30 |         66        0.66       97.54
         31 |         35        0.35       97.89
         32 |         36        0.36       98.25
         33 |         22        0.22       98.47
         34 |         30        0.30       98.77
         35 |         29        0.29       99.06
         36 |         19        0.19       99.25
         37 |         12        0.12       99.37
         38 |          8        0.08       99.45
         39 |         13        0.13       99.58
         40 |          9        0.09       99.67
         41 |          6        0.06       99.73
         42 |          3        0.03       99.76
         43 |          6        0.06       99.82
         44 |          7        0.07       99.89
         45 |          5        0.05       99.94
         46 |          1        0.01       99.95
         47 |          1        0.01       99.96
         48 |          1        0.01       99.97
         49 |          1        0.01       99.98
         50 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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