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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,675       56.75       56.75
          1 |         61        0.61       57.36
          2 |         89        0.89       58.25
          3 |         67        0.67       58.92
          4 |         96        0.96       59.88
          5 |         95        0.95       60.83
          6 |         88        0.88       61.71
          7 |        138        1.38       63.09
          8 |        129        1.29       64.38
          9 |        124        1.24       65.62
         10 |        167        1.67       67.29
         11 |        148        1.48       68.77
         12 |        170        1.70       70.47
         13 |        202        2.02       72.49
         14 |        185        1.85       74.34
         15 |        172        1.72       76.06
         16 |        188        1.88       77.94
         17 |        184        1.84       79.78
         18 |        175        1.75       81.53
         19 |        197        1.97       83.50
         20 |        187        1.87       85.37
         21 |        185        1.85       87.22
         22 |        178        1.78       89.00
         23 |        146        1.46       90.46
         24 |        149        1.49       91.95
         25 |        105        1.05       93.00
         26 |        129        1.29       94.29
         27 |        102        1.02       95.31
         28 |         89        0.89       96.20
         29 |         78        0.78       96.98
         30 |         63        0.63       97.61
         31 |         42        0.42       98.03
         32 |         30        0.30       98.33
         33 |         33        0.33       98.66
         34 |         22        0.22       98.88
         35 |         23        0.23       99.11
         36 |         19        0.19       99.30
         37 |         17        0.17       99.47
         38 |          8        0.08       99.55
         39 |          8        0.08       99.63
         40 |          7        0.07       99.70
         41 |          6        0.06       99.76
         42 |          6        0.06       99.82
         43 |          4        0.04       99.86
         44 |          1        0.01       99.87
         45 |          3        0.03       99.90
         46 |          2        0.02       99.92
         47 |          1        0.01       99.93
         50 |          1        0.01       99.94
         51 |          2        0.02       99.96
         56 |          1        0.01       99.97
         60 |          1        0.01       99.98
         62 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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