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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,124       41.24       41.24
          1 |         52        0.52       41.76
          2 |         68        0.68       42.44
          3 |         83        0.83       43.27
          4 |         88        0.88       44.15
          5 |        105        1.05       45.20
          6 |        122        1.22       46.42
          7 |        125        1.25       47.67
          8 |        155        1.55       49.22
          9 |        183        1.83       51.05
         10 |        186        1.86       52.91
         11 |        230        2.30       55.21
         12 |        251        2.51       57.72
         13 |        230        2.30       60.02
         14 |        280        2.80       62.82
         15 |        273        2.73       65.55
         16 |        309        3.09       68.64
         17 |        299        2.99       71.63
         18 |        277        2.77       74.40
         19 |        271        2.71       77.11
         20 |        290        2.90       80.01
         21 |        242        2.42       82.43
         22 |        246        2.46       84.89
         23 |        221        2.21       87.10
         24 |        183        1.83       88.93
         25 |        170        1.70       90.63
         26 |        149        1.49       92.12
         27 |        115        1.15       93.27
         28 |        106        1.06       94.33
         29 |         95        0.95       95.28
         30 |         87        0.87       96.15
         31 |         66        0.66       96.81
         32 |         61        0.61       97.42
         33 |         43        0.43       97.85
         34 |         32        0.32       98.17
         35 |         34        0.34       98.51
         36 |         28        0.28       98.79
         37 |         23        0.23       99.02
         38 |         14        0.14       99.16
         39 |          8        0.08       99.24
         40 |         15        0.15       99.39
         41 |         11        0.11       99.50
         42 |          8        0.08       99.58
         43 |          4        0.04       99.62
         44 |          7        0.07       99.69
         45 |          5        0.05       99.74
         46 |          2        0.02       99.76
         47 |          3        0.03       99.79
         48 |          4        0.04       99.83
         49 |          2        0.02       99.85
         50 |          2        0.02       99.87
         51 |          1        0.01       99.88
         52 |          1        0.01       99.89
         53 |          1        0.01       99.90
         59 |          1        0.01       99.91
         61 |          1        0.01       99.92
         62 |          2        0.02       99.94
         63 |          2        0.02       99.96
         66 |          1        0.01       99.97
         69 |          1        0.01       99.98
         74 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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