Frequencies for first 10,000 rows of a9 variable in miacc dataset :

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,133       41.33       41.33
          1 |         54        0.54       41.87
          2 |         67        0.67       42.54
          3 |         75        0.75       43.29
          4 |         91        0.91       44.20
          5 |        101        1.01       45.21
          6 |        128        1.28       46.49
          7 |        140        1.40       47.89
          8 |        163        1.63       49.52
          9 |        182        1.82       51.34
         10 |        184        1.84       53.18
         11 |        248        2.48       55.66
         12 |        249        2.49       58.15
         13 |        247        2.47       60.62
         14 |        230        2.30       62.92
         15 |        264        2.64       65.56
         16 |        307        3.07       68.63
         17 |        295        2.95       71.58
         18 |        272        2.72       74.30
         19 |        264        2.64       76.94
         20 |        276        2.76       79.70
         21 |        269        2.69       82.39
         22 |        238        2.38       84.77
         23 |        224        2.24       87.01
         24 |        191        1.91       88.92
         25 |        181        1.81       90.73
         26 |        160        1.60       92.33
         27 |        121        1.21       93.54
         28 |        118        1.18       94.72
         29 |         91        0.91       95.63
         30 |         73        0.73       96.36
         31 |         67        0.67       97.03
         32 |         51        0.51       97.54
         33 |         51        0.51       98.05
         34 |         30        0.30       98.35
         35 |         29        0.29       98.64
         36 |         33        0.33       98.97
         37 |         20        0.20       99.17
         38 |         16        0.16       99.33
         39 |          9        0.09       99.42
         40 |          8        0.08       99.50
         41 |         10        0.10       99.60
         42 |          7        0.07       99.67
         43 |          7        0.07       99.74
         44 |          6        0.06       99.80
         45 |          1        0.01       99.81
         46 |          2        0.02       99.83
         47 |          1        0.01       99.84
         48 |          3        0.03       99.87
         49 |          1        0.01       99.88
         50 |          1        0.01       99.89
         59 |          2        0.02       99.91
         61 |          1        0.01       99.92
         62 |          1        0.01       99.93
         63 |          3        0.03       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