Frequencies for pmake variable in parkwork dataset :

    Vehicle |
       Make |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |         21        2.10        2.10
          3 |          1        0.10        2.20
          6 |         15        1.50        3.69
          7 |         66        6.59       10.28
          9 |          6        0.60       10.88
         12 |        174       17.37       28.24
         13 |         11        1.10       29.34
         14 |         10        1.00       30.34
         18 |         19        1.90       32.24
         19 |         17        1.70       33.93
         20 |        146       14.57       48.50
         21 |          9        0.90       49.40
         22 |         16        1.60       51.00
         23 |         30        2.99       53.99
         24 |          9        0.90       54.89
         30 |          4        0.40       55.29
         32 |          1        0.10       55.39
         34 |          8        0.80       56.19
         35 |         45        4.49       60.68
         37 |         54        5.39       66.07
         38 |          2        0.20       66.27
         41 |         11        1.10       67.37
         42 |          9        0.90       68.26
         48 |          5        0.50       68.76
         49 |         79        7.88       76.65
         51 |         13        1.30       77.94
         52 |          6        0.60       78.54
         53 |          2        0.20       78.74
         54 |         11        1.10       79.84
         55 |          8        0.80       80.64
         58 |          2        0.20       80.84
         59 |          6        0.60       81.44
         62 |          2        0.20       81.64
         63 |         12        1.20       82.83
         69 |          1        0.10       82.93
         72 |          2        0.20       83.13
         73 |          2        0.20       83.33
         76 |          1        0.10       83.43
         82 |         40        3.99       87.43
         84 |         40        3.99       91.42
         85 |         16        1.60       93.01
         86 |          8        0.80       93.81
         87 |         11        1.10       94.91
         89 |          1        0.10       95.01
         97 |          2        0.20       95.21
         98 |         27        2.69       97.90
         99 |         21        2.10      100.00
------------+-----------------------------------
      Total |      1,002      100.00

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