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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,913       59.13       59.13
          1 |         60        0.60       59.73
          2 |         85        0.85       60.58
          3 |         86        0.86       61.44
          4 |         79        0.79       62.23
          5 |         83        0.83       63.06
          6 |         99        0.99       64.05
          7 |        101        1.01       65.06
          8 |        120        1.20       66.26
          9 |        129        1.29       67.55
         10 |        144        1.44       68.99
         11 |        131        1.31       70.30
         12 |        157        1.57       71.87
         13 |        153        1.53       73.40
         14 |        190        1.90       75.30
         15 |        171        1.71       77.01
         16 |        220        2.20       79.21
         17 |        202        2.02       81.23
         18 |        172        1.72       82.95
         19 |        181        1.81       84.76
         20 |        162        1.62       86.38
         21 |        163        1.63       88.01
         22 |        149        1.49       89.50
         23 |        132        1.32       90.82
         24 |        124        1.24       92.06
         25 |        117        1.17       93.23
         26 |        111        1.11       94.34
         27 |         91        0.91       95.25
         28 |         76        0.76       96.01
         29 |         47        0.47       96.48
         30 |         67        0.67       97.15
         31 |         48        0.48       97.63
         32 |         53        0.53       98.16
         33 |         33        0.33       98.49
         34 |         22        0.22       98.71
         35 |         16        0.16       98.87
         36 |         14        0.14       99.01
         37 |         17        0.17       99.18
         38 |         17        0.17       99.35
         39 |         15        0.15       99.50
         40 |         13        0.13       99.63
         41 |          5        0.05       99.68
         42 |          3        0.03       99.71
         43 |          5        0.05       99.76
         44 |          2        0.02       99.78
         45 |          6        0.06       99.84
         46 |          1        0.01       99.85
         47 |          2        0.02       99.87
         48 |          2        0.02       99.89
         49 |          1        0.01       99.90
         50 |          2        0.02       99.92
         51 |          1        0.01       99.93
         53 |          1        0.01       99.94
         58 |          1        0.01       99.95
         61 |          2        0.02       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