Frequencies for first 10,000 rows of a1 variable in miacc dataset :

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,869       48.69       48.69
          1 |         57        0.57       49.26
          2 |         98        0.98       50.24
          3 |         98        0.98       51.22
          4 |         94        0.94       52.16
          5 |         97        0.97       53.13
          6 |        121        1.21       54.34
          7 |        123        1.23       55.57
          8 |        133        1.33       56.90
          9 |        172        1.72       58.62
         10 |        187        1.87       60.49
         11 |        188        1.88       62.37
         12 |        207        2.07       64.44
         13 |        210        2.10       66.54
         14 |        209        2.09       68.63
         15 |        241        2.41       71.04
         16 |        249        2.49       73.53
         17 |        256        2.56       76.09
         18 |        224        2.24       78.33
         19 |        241        2.41       80.74
         20 |        242        2.42       83.16
         21 |        218        2.18       85.34
         22 |        198        1.98       87.32
         23 |        177        1.77       89.09
         24 |        179        1.79       90.88
         25 |        163        1.63       92.51
         26 |        119        1.19       93.70
         27 |        125        1.25       94.95
         28 |         96        0.96       95.91
         29 |         85        0.85       96.76
         30 |         69        0.69       97.45
         31 |         44        0.44       97.89
         32 |         33        0.33       98.22
         33 |         32        0.32       98.54
         34 |         26        0.26       98.80
         35 |         23        0.23       99.03
         36 |         20        0.20       99.23
         37 |         19        0.19       99.42
         38 |         12        0.12       99.54
         39 |          7        0.07       99.61
         40 |          8        0.08       99.69
         41 |          4        0.04       99.73
         42 |          5        0.05       99.78
         43 |          5        0.05       99.83
         44 |          5        0.05       99.88
         45 |          2        0.02       99.90
         46 |          1        0.01       99.91
         47 |          1        0.01       99.92
         48 |          2        0.02       99.94
         49 |          1        0.01       99.95
         52 |          1        0.01       99.96
         53 |          1        0.01       99.97
         56 |          1        0.01       99.98
         61 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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