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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,329       53.29       53.29
          1 |         58        0.58       53.87
          2 |         84        0.84       54.71
          3 |         88        0.88       55.59
          4 |         87        0.87       56.46
          5 |         92        0.92       57.38
          6 |        109        1.09       58.47
          7 |        121        1.21       59.68
          8 |        135        1.35       61.03
          9 |        146        1.46       62.49
         10 |        160        1.60       64.09
         11 |        150        1.50       65.59
         12 |        179        1.79       67.38
         13 |        193        1.93       69.31
         14 |        216        2.16       71.47
         15 |        263        2.63       74.10
         16 |        207        2.07       76.17
         17 |        215        2.15       78.32
         18 |        210        2.10       80.42
         19 |        214        2.14       82.56
         20 |        223        2.23       84.79
         21 |        218        2.18       86.97
         22 |        178        1.78       88.75
         23 |        159        1.59       90.34
         24 |        145        1.45       91.79
         25 |        136        1.36       93.15
         26 |        115        1.15       94.30
         27 |        105        1.05       95.35
         28 |         79        0.79       96.14
         29 |         84        0.84       96.98
         30 |         53        0.53       97.51
         31 |         42        0.42       97.93
         32 |         43        0.43       98.36
         33 |         29        0.29       98.65
         34 |         29        0.29       98.94
         35 |         21        0.21       99.15
         36 |         20        0.20       99.35
         37 |         19        0.19       99.54
         38 |         15        0.15       99.69
         39 |          6        0.06       99.75
         40 |          4        0.04       99.79
         41 |          8        0.08       99.87
         43 |          2        0.02       99.89
         44 |          3        0.03       99.92
         45 |          2        0.02       99.94
         48 |          1        0.01       99.95
         52 |          2        0.02       99.97
         54 |          1        0.01       99.98
         56 |          1        0.01       99.99
         62 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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