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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,107       61.07       61.07
          1 |         47        0.47       61.54
          2 |         67        0.67       62.21
          3 |         79        0.79       63.00
          4 |         84        0.84       63.84
          5 |         87        0.87       64.71
          6 |         89        0.89       65.60
          7 |         89        0.89       66.49
          8 |        127        1.27       67.76
          9 |        126        1.26       69.02
         10 |        134        1.34       70.36
         11 |        146        1.46       71.82
         12 |        138        1.38       73.20
         13 |        157        1.57       74.77
         14 |        168        1.68       76.45
         15 |        180        1.80       78.25
         16 |        174        1.74       79.99
         17 |        156        1.56       81.55
         18 |        163        1.63       83.18
         19 |        182        1.82       85.00
         20 |        161        1.61       86.61
         21 |        147        1.47       88.08
         22 |        136        1.36       89.44
         23 |        157        1.57       91.01
         24 |        110        1.10       92.11
         25 |        105        1.05       93.16
         26 |        112        1.12       94.28
         27 |         93        0.93       95.21
         28 |         72        0.72       95.93
         29 |         57        0.57       96.50
         30 |         56        0.56       97.06
         31 |         45        0.45       97.51
         32 |         37        0.37       97.88
         33 |         39        0.39       98.27
         34 |         20        0.20       98.47
         35 |         27        0.27       98.74
         36 |         24        0.24       98.98
         37 |         12        0.12       99.10
         38 |         18        0.18       99.28
         39 |         13        0.13       99.41
         40 |         13        0.13       99.54
         41 |         15        0.15       99.69
         42 |          4        0.04       99.73
         43 |          4        0.04       99.77
         44 |          3        0.03       99.80
         45 |          5        0.05       99.85
         46 |          3        0.03       99.88
         47 |          3        0.03       99.91
         48 |          1        0.01       99.92
         49 |          2        0.02       99.94
         50 |          1        0.01       99.95
         51 |          1        0.01       99.96
         52 |          2        0.02       99.98
         54 |          1        0.01       99.99
         57 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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