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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,990       59.90       59.90
          1 |         50        0.50       60.40
          2 |         86        0.86       61.26
          3 |         77        0.77       62.03
          4 |         78        0.78       62.81
          5 |         97        0.97       63.78
          6 |        107        1.07       64.85
          7 |         95        0.95       65.80
          8 |        121        1.21       67.01
          9 |        101        1.01       68.02
         10 |        163        1.63       69.65
         11 |        138        1.38       71.03
         12 |        151        1.51       72.54
         13 |        153        1.53       74.07
         14 |        190        1.90       75.97
         15 |        160        1.60       77.57
         16 |        202        2.02       79.59
         17 |        192        1.92       81.51
         18 |        152        1.52       83.03
         19 |        182        1.82       84.85
         20 |        172        1.72       86.57
         21 |        172        1.72       88.29
         22 |        159        1.59       89.88
         23 |        140        1.40       91.28
         24 |        112        1.12       92.40
         25 |        122        1.22       93.62
         26 |        121        1.21       94.83
         27 |         82        0.82       95.65
         28 |         83        0.83       96.48
         29 |         59        0.59       97.07
         30 |         44        0.44       97.51
         31 |         51        0.51       98.02
         32 |         42        0.42       98.44
         33 |         26        0.26       98.70
         34 |         23        0.23       98.93
         35 |         17        0.17       99.10
         36 |          7        0.07       99.17
         37 |         12        0.12       99.29
         38 |         18        0.18       99.47
         39 |         11        0.11       99.58
         40 |          8        0.08       99.66
         41 |          5        0.05       99.71
         42 |          5        0.05       99.76
         43 |          4        0.04       99.80
         44 |          6        0.06       99.86
         45 |          3        0.03       99.89
         46 |          2        0.02       99.91
         49 |          1        0.01       99.92
         50 |          1        0.01       99.93
         51 |          3        0.03       99.96
         56 |          1        0.01       99.97
         57 |          1        0.01       99.98
         67 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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