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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,871       58.71       58.71
          1 |         53        0.53       59.24
          2 |         73        0.73       59.97
          3 |         74        0.74       60.71
          4 |         81        0.81       61.52
          5 |         85        0.85       62.37
          6 |        105        1.05       63.42
          7 |         98        0.98       64.40
          8 |         97        0.97       65.37
          9 |        112        1.12       66.49
         10 |        149        1.49       67.98
         11 |        171        1.71       69.69
         12 |        152        1.52       71.21
         13 |        171        1.71       72.92
         14 |        160        1.60       74.52
         15 |        193        1.93       76.45
         16 |        184        1.84       78.29
         17 |        201        2.01       80.30
         18 |        178        1.78       82.08
         19 |        204        2.04       84.12
         20 |        162        1.62       85.74
         21 |        174        1.74       87.48
         22 |        189        1.89       89.37
         23 |        163        1.63       91.00
         24 |        145        1.45       92.45
         25 |        118        1.18       93.63
         26 |         97        0.97       94.60
         27 |         85        0.85       95.45
         28 |         99        0.99       96.44
         29 |         63        0.63       97.07
         30 |         47        0.47       97.54
         31 |         52        0.52       98.06
         32 |         31        0.31       98.37
         33 |         29        0.29       98.66
         34 |         20        0.20       98.86
         35 |         16        0.16       99.02
         36 |         18        0.18       99.20
         37 |         12        0.12       99.32
         38 |         13        0.13       99.45
         39 |         11        0.11       99.56
         40 |          5        0.05       99.61
         41 |          5        0.05       99.66
         42 |          8        0.08       99.74
         43 |          3        0.03       99.77
         44 |          3        0.03       99.80
         45 |          4        0.04       99.84
         46 |          3        0.03       99.87
         47 |          3        0.03       99.90
         48 |          3        0.03       99.93
         49 |          1        0.01       99.94
         50 |          1        0.01       99.95
         51 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          1        0.01       99.98
         62 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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