Frequencies for pmake variable in parkwork dataset :

    vehicle |
       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |         27        2.38        2.38
          6 |         28        2.47        4.85
          7 |         78        6.88       11.74
          9 |          5        0.44       12.18
         12 |        177       15.62       27.80
         13 |         10        0.88       28.68
         14 |          9        0.79       29.48
         18 |         22        1.94       31.42
         19 |         12        1.06       32.48
         20 |        127       11.21       43.69
         21 |          5        0.44       44.13
         22 |         14        1.24       45.37
         23 |         36        3.18       48.54
         24 |          7        0.62       49.16
         30 |         16        1.41       50.57
         32 |          3        0.26       50.84
         34 |         16        1.41       52.25
         35 |         56        4.94       57.19
         36 |          1        0.09       57.28
         37 |         63        5.56       62.84
         38 |          5        0.44       63.28
         41 |         17        1.50       64.78
         42 |          9        0.79       65.58
         45 |          1        0.09       65.67
         47 |          3        0.26       65.93
         48 |          5        0.44       66.37
         49 |        104        9.18       75.55
         51 |         23        2.03       77.58
         52 |          9        0.79       78.38
         53 |          1        0.09       78.46
         54 |          7        0.62       79.08
         55 |         18        1.59       80.67
         58 |          4        0.35       81.02
         59 |         11        0.97       81.99
         63 |         14        1.24       83.23
         67 |          1        0.09       83.32
         72 |          8        0.71       84.02
         76 |          3        0.26       84.29
         82 |         52        4.59       88.88
         84 |         45        3.97       92.85
         85 |          9        0.79       93.65
         86 |          5        0.44       94.09
         87 |         26        2.29       96.38
         89 |          2        0.18       96.56
         98 |         25        2.21       98.76
         99 |         14        1.24      100.00
------------+-----------------------------------
      Total |      1,133      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016