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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,857       58.57       58.57
          1 |         51        0.51       59.08
          2 |         72        0.72       59.80
          3 |         74        0.74       60.54
          4 |         77        0.77       61.31
          5 |         87        0.87       62.18
          6 |        103        1.03       63.21
          7 |        112        1.12       64.33
          8 |        109        1.09       65.42
          9 |        113        1.13       66.55
         10 |        147        1.47       68.02
         11 |        166        1.66       69.68
         12 |        157        1.57       71.25
         13 |        178        1.78       73.03
         14 |        172        1.72       74.75
         15 |        186        1.86       76.61
         16 |        185        1.85       78.46
         17 |        192        1.92       80.38
         18 |        179        1.79       82.17
         19 |        206        2.06       84.23
         20 |        160        1.60       85.83
         21 |        171        1.71       87.54
         22 |        185        1.85       89.39
         23 |        161        1.61       91.00
         24 |        148        1.48       92.48
         25 |        118        1.18       93.66
         26 |         94        0.94       94.60
         27 |         84        0.84       95.44
         28 |        103        1.03       96.47
         29 |         62        0.62       97.09
         30 |         50        0.50       97.59
         31 |         53        0.53       98.12
         32 |         31        0.31       98.43
         33 |         30        0.30       98.73
         34 |         17        0.17       98.90
         35 |         14        0.14       99.04
         36 |         21        0.21       99.25
         37 |         11        0.11       99.36
         38 |         15        0.15       99.51
         39 |          8        0.08       99.59
         40 |          9        0.09       99.68
         41 |          4        0.04       99.72
         42 |          6        0.06       99.78
         43 |          2        0.02       99.80
         44 |          4        0.04       99.84
         45 |          3        0.03       99.87
         46 |          1        0.01       99.88
         47 |          3        0.03       99.91
         48 |          2        0.02       99.93
         49 |          1        0.01       99.94
         50 |          1        0.01       99.95
         51 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          1        0.01       99.98
         62 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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