Frequencies for first 10,000 rows of a2 variable in miacc dataset :

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,085       60.85       60.85
          1 |         48        0.48       61.33
          2 |         72        0.72       62.05
          3 |         89        0.89       62.94
          4 |         89        0.89       63.83
          5 |         88        0.88       64.71
          6 |        101        1.01       65.72
          7 |         82        0.82       66.54
          8 |        147        1.47       68.01
          9 |        113        1.13       69.14
         10 |        133        1.33       70.47
         11 |        152        1.52       71.99
         12 |        148        1.48       73.47
         13 |        148        1.48       74.95
         14 |        160        1.60       76.55
         15 |        187        1.87       78.42
         16 |        176        1.76       80.18
         17 |        151        1.51       81.69
         18 |        166        1.66       83.35
         19 |        181        1.81       85.16
         20 |        165        1.65       86.81
         21 |        143        1.43       88.24
         22 |        145        1.45       89.69
         23 |        157        1.57       91.26
         24 |        113        1.13       92.39
         25 |        103        1.03       93.42
         26 |         95        0.95       94.37
         27 |         94        0.94       95.31
         28 |         74        0.74       96.05
         29 |         52        0.52       96.57
         30 |         58        0.58       97.15
         31 |         34        0.34       97.49
         32 |         43        0.43       97.92
         33 |         40        0.40       98.32
         34 |         19        0.19       98.51
         35 |         30        0.30       98.81
         36 |         23        0.23       99.04
         37 |          7        0.07       99.11
         38 |         20        0.20       99.31
         39 |         10        0.10       99.41
         40 |         11        0.11       99.52
         41 |         15        0.15       99.67
         42 |          6        0.06       99.73
         43 |          6        0.06       99.79
         44 |          4        0.04       99.83
         45 |          6        0.06       99.89
         46 |          3        0.03       99.92
         47 |          3        0.03       99.95
         48 |          1        0.01       99.96
         49 |          2        0.02       99.98
         50 |          1        0.01       99.99
         58 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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