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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,641       46.41       46.41
          1 |         71        0.71       47.12
          2 |        103        1.03       48.15
          3 |         94        0.94       49.09
          4 |        100        1.00       50.09
          5 |        127        1.27       51.36
          6 |        138        1.38       52.74
          7 |        116        1.16       53.90
          8 |        156        1.56       55.46
          9 |        157        1.57       57.03
         10 |        180        1.80       58.83
         11 |        212        2.12       60.95
         12 |        233        2.33       63.28
         13 |        232        2.32       65.60
         14 |        230        2.30       67.90
         15 |        259        2.59       70.49
         16 |        284        2.84       73.33
         17 |        253        2.53       75.86
         18 |        278        2.78       78.64
         19 |        230        2.30       80.94
         20 |        211        2.11       83.05
         21 |        228        2.28       85.33
         22 |        212        2.12       87.45
         23 |        170        1.70       89.15
         24 |        166        1.66       90.81
         25 |        141        1.41       92.22
         26 |        112        1.12       93.34
         27 |        113        1.13       94.47
         28 |         92        0.92       95.39
         29 |         71        0.71       96.10
         30 |         78        0.78       96.88
         31 |         67        0.67       97.55
         32 |         44        0.44       97.99
         33 |         41        0.41       98.40
         34 |         32        0.32       98.72
         35 |         24        0.24       98.96
         36 |         22        0.22       99.18
         37 |         19        0.19       99.37
         38 |         14        0.14       99.51
         39 |         10        0.10       99.61
         40 |          9        0.09       99.70
         41 |          8        0.08       99.78
         42 |          6        0.06       99.84
         43 |          5        0.05       99.89
         45 |          1        0.01       99.90
         46 |          1        0.01       99.91
         47 |          1        0.01       99.92
         48 |          2        0.02       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
         59 |          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