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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,287       42.87       42.87
          1 |         52        0.52       43.39
          2 |         77        0.77       44.16
          3 |         92        0.92       45.08
          4 |         94        0.94       46.02
          5 |        122        1.22       47.24
          6 |        133        1.33       48.57
          7 |        144        1.44       50.01
          8 |        173        1.73       51.74
          9 |        193        1.93       53.67
         10 |        190        1.90       55.57
         11 |        227        2.27       57.84
         12 |        237        2.37       60.21
         13 |        265        2.65       62.86
         14 |        221        2.21       65.07
         15 |        286        2.86       67.93
         16 |        288        2.88       70.81
         17 |        287        2.87       73.68
         18 |        303        3.03       76.71
         19 |        277        2.77       79.48
         20 |        241        2.41       81.89
         21 |        245        2.45       84.34
         22 |        244        2.44       86.78
         23 |        194        1.94       88.72
         24 |        164        1.64       90.36
         25 |        165        1.65       92.01
         26 |        133        1.33       93.34
         27 |        112        1.12       94.46
         28 |        103        1.03       95.49
         29 |         80        0.80       96.29
         30 |         65        0.65       96.94
         31 |         69        0.69       97.63
         32 |         49        0.49       98.12
         33 |         30        0.30       98.42
         34 |         29        0.29       98.71
         35 |         32        0.32       99.03
         36 |         11        0.11       99.14
         37 |         14        0.14       99.28
         38 |         16        0.16       99.44
         39 |         10        0.10       99.54
         40 |          6        0.06       99.60
         41 |          9        0.09       99.69
         42 |          7        0.07       99.76
         43 |          1        0.01       99.77
         44 |          7        0.07       99.84
         45 |          4        0.04       99.88
         46 |          2        0.02       99.90
         47 |          1        0.01       99.91
         48 |          3        0.03       99.94
         50 |          1        0.01       99.95
         51 |          1        0.01       99.96
         52 |          1        0.01       99.97
         53 |          1        0.01       99.98
         56 |          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