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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,047       60.47       60.47
          1 |         61        0.61       61.08
          2 |         79        0.79       61.87
          3 |         73        0.73       62.60
          4 |         76        0.76       63.36
          5 |         95        0.95       64.31
          6 |        100        1.00       65.31
          7 |        100        1.00       66.31
          8 |        129        1.29       67.60
          9 |        114        1.14       68.74
         10 |        126        1.26       70.00
         11 |        171        1.71       71.71
         12 |        157        1.57       73.28
         13 |        157        1.57       74.85
         14 |        170        1.70       76.55
         15 |        169        1.69       78.24
         16 |        174        1.74       79.98
         17 |        164        1.64       81.62
         18 |        199        1.99       83.61
         19 |        191        1.91       85.52
         20 |        175        1.75       87.27
         21 |        159        1.59       88.86
         22 |        137        1.37       90.23
         23 |        141        1.41       91.64
         24 |        111        1.11       92.75
         25 |        100        1.00       93.75
         26 |         95        0.95       94.70
         27 |         78        0.78       95.48
         28 |         71        0.71       96.19
         29 |         68        0.68       96.87
         30 |         59        0.59       97.46
         31 |         38        0.38       97.84
         32 |         45        0.45       98.29
         33 |         38        0.38       98.67
         34 |         21        0.21       98.88
         35 |         29        0.29       99.17
         36 |         14        0.14       99.31
         37 |          9        0.09       99.40
         38 |         14        0.14       99.54
         39 |         12        0.12       99.66
         40 |          9        0.09       99.75
         41 |          2        0.02       99.77
         42 |          7        0.07       99.84
         43 |          1        0.01       99.85
         44 |          1        0.01       99.86
         45 |          5        0.05       99.91
         46 |          3        0.03       99.94
         47 |          1        0.01       99.95
         49 |          1        0.01       99.96
         51 |          1        0.01       99.97
         52 |          1        0.01       99.98
         53 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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