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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,519       55.19       55.19
          1 |         46        0.46       55.65
          2 |         83        0.83       56.48
          3 |         84        0.84       57.32
          4 |         80        0.80       58.12
          5 |         90        0.90       59.02
          6 |         87        0.87       59.89
          7 |        103        1.03       60.92
          8 |        133        1.33       62.25
          9 |        146        1.46       63.71
         10 |        163        1.63       65.34
         11 |        160        1.60       66.94
         12 |        162        1.62       68.56
         13 |        215        2.15       70.71
         14 |        180        1.80       72.51
         15 |        195        1.95       74.46
         16 |        227        2.27       76.73
         17 |        201        2.01       78.74
         18 |        201        2.01       80.75
         19 |        210        2.10       82.85
         20 |        198        1.98       84.83
         21 |        163        1.63       86.46
         22 |        172        1.72       88.18
         23 |        145        1.45       89.63
         24 |        143        1.43       91.06
         25 |        135        1.35       92.41
         26 |        110        1.10       93.51
         27 |         95        0.95       94.46
         28 |         87        0.87       95.33
         29 |         91        0.91       96.24
         30 |         66        0.66       96.90
         31 |         36        0.36       97.26
         32 |         51        0.51       97.77
         33 |         38        0.38       98.15
         34 |         34        0.34       98.49
         35 |         33        0.33       98.82
         36 |         26        0.26       99.08
         37 |         15        0.15       99.23
         38 |         14        0.14       99.37
         39 |         11        0.11       99.48
         40 |         12        0.12       99.60
         41 |         13        0.13       99.73
         42 |          6        0.06       99.79
         43 |          2        0.02       99.81
         44 |          5        0.05       99.86
         45 |          5        0.05       99.91
         46 |          2        0.02       99.93
         47 |          1        0.01       99.94
         50 |          1        0.01       99.95
         54 |          2        0.02       99.97
         56 |          1        0.01       99.98
         67 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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