Frequencies for first 10,000 rows of digsc12d variable in namcs2006 dataset :

 diagnostic |
 service #1 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      8,671       86.71       86.71
         16 |          1        0.01       86.72
         20 |          1        0.01       86.73
         34 |          1        0.01       86.74
         37 |          2        0.02       86.76
         38 |          3        0.03       86.79
         54 |          1        0.01       86.80
         75 |         15        0.15       86.95
         79 |          1        0.01       86.96
         81 |          1        0.01       86.97
         86 |         19        0.19       87.16
         87 |          1        0.01       87.17
         88 |          2        0.02       87.19
         89 |        646        6.46       93.65
         90 |        280        2.80       96.45
         91 |        141        1.41       97.86
         92 |          9        0.09       97.95
         93 |          5        0.05       98.00
         94 |          8        0.08       98.08
         95 |        114        1.14       99.22
         96 |          4        0.04       99.26
         97 |          3        0.03       99.29
         99 |         71        0.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016