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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,978       59.78       59.78
          1 |         59        0.59       60.37
          2 |         85        0.85       61.22
          3 |         83        0.83       62.05
          4 |         89        0.89       62.94
          5 |         83        0.83       63.77
          6 |         90        0.90       64.67
          7 |         89        0.89       65.56
          8 |        110        1.10       66.66
          9 |        135        1.35       68.01
         10 |        129        1.29       69.30
         11 |        136        1.36       70.66
         12 |        166        1.66       72.32
         13 |        170        1.70       74.02
         14 |        182        1.82       75.84
         15 |        187        1.87       77.71
         16 |        220        2.20       79.91
         17 |        184        1.84       81.75
         18 |        170        1.70       83.45
         19 |        193        1.93       85.38
         20 |        152        1.52       86.90
         21 |        165        1.65       88.55
         22 |        143        1.43       89.98
         23 |        125        1.25       91.23
         24 |        140        1.40       92.63
         25 |        109        1.09       93.72
         26 |        102        1.02       94.74
         27 |         89        0.89       95.63
         28 |         78        0.78       96.41
         29 |         50        0.50       96.91
         30 |         63        0.63       97.54
         31 |         42        0.42       97.96
         32 |         46        0.46       98.42
         33 |         31        0.31       98.73
         34 |         22        0.22       98.95
         35 |         12        0.12       99.07
         36 |         16        0.16       99.23
         37 |         15        0.15       99.38
         38 |         12        0.12       99.50
         39 |         12        0.12       99.62
         40 |         10        0.10       99.72
         41 |          2        0.02       99.74
         42 |          5        0.05       99.79
         43 |          3        0.03       99.82
         44 |          3        0.03       99.85
         45 |          3        0.03       99.88
         46 |          1        0.01       99.89
         47 |          3        0.03       99.92
         48 |          1        0.01       99.93
         49 |          1        0.01       99.94
         51 |          1        0.01       99.95
         58 |          1        0.01       99.96
         61 |          1        0.01       99.97
         65 |          1        0.01       99.98
         68 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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