Frequencies for first 10,000 rows of a9 variable in miacc dataset :

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,913       59.13       59.13
          1 |         67        0.67       59.80
          2 |         90        0.90       60.70
          3 |         80        0.80       61.50
          4 |         82        0.82       62.32
          5 |         90        0.90       63.22
          6 |         86        0.86       64.08
          7 |         88        0.88       64.96
          8 |        110        1.10       66.06
          9 |        141        1.41       67.47
         10 |        150        1.50       68.97
         11 |        170        1.70       70.67
         12 |        167        1.67       72.34
         13 |        155        1.55       73.89
         14 |        164        1.64       75.53
         15 |        178        1.78       77.31
         16 |        188        1.88       79.19
         17 |        209        2.09       81.28
         18 |        191        1.91       83.19
         19 |        179        1.79       84.98
         20 |        192        1.92       86.90
         21 |        150        1.50       88.40
         22 |        157        1.57       89.97
         23 |        138        1.38       91.35
         24 |        118        1.18       92.53
         25 |        121        1.21       93.74
         26 |         98        0.98       94.72
         27 |         90        0.90       95.62
         28 |         75        0.75       96.37
         29 |         65        0.65       97.02
         30 |         52        0.52       97.54
         31 |         29        0.29       97.83
         32 |         36        0.36       98.19
         33 |         32        0.32       98.51
         34 |         18        0.18       98.69
         35 |         29        0.29       98.98
         36 |         24        0.24       99.22
         37 |         15        0.15       99.37
         38 |          7        0.07       99.44
         39 |          9        0.09       99.53
         40 |         10        0.10       99.63
         41 |          9        0.09       99.72
         42 |          6        0.06       99.78
         43 |          1        0.01       99.79
         44 |          2        0.02       99.81
         45 |          2        0.02       99.83
         46 |          2        0.02       99.85
         47 |          5        0.05       99.90
         48 |          2        0.02       99.92
         50 |          1        0.01       99.93
         52 |          3        0.03       99.96
         53 |          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