Frequencies for pvinmake variable in parkwork dataset :

   VIN MAKE |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         65        6.11        6.11
       ACUR |          9        0.85        6.95
       ALFA |          1        0.09        7.05
       AMER |          2        0.19        7.24
       AUDI |          4        0.38        7.61
       AUTO |          1        0.09        7.71
        BMW |         14        1.32        9.02
       BUIC |         10        0.94        9.96
       CADI |         11        1.03       11.00
       CHEV |        136       12.78       23.78
       CHRY |         16        1.50       25.28
       DAEW |          2        0.19       25.47
       DODG |         60        5.64       31.11
       FORD |        190       17.86       48.97
       FRHT |         33        3.10       52.07
        GEM |          1        0.09       52.16
        GEO |          1        0.09       52.26
        GMC |         31        2.91       55.17
         HD |          5        0.47       55.64
       HINO |          2        0.19       55.83
       HOND |         56        5.26       61.09
       HYUN |          9        0.85       61.94
       INFI |          2        0.19       62.12
       INTL |         33        3.10       65.23
        ISU |          9        0.85       66.07
       JAGU |          3        0.28       66.35
       JEEP |         27        2.54       68.89
       KAWK |          1        0.09       68.98
        KIA |          7        0.66       69.64
         KW |         13        1.22       70.86
       LEXS |          9        0.85       71.71
       LINC |          7        0.66       72.37
       LNDR |          1        0.09       72.46
       MACK |         11        1.03       73.50
       MAZD |         15        1.41       74.91
       MERC |         13        1.22       76.13
       MERZ |         16        1.50       77.63
       MITS |         12        1.13       78.76
       MNNI |          1        0.09       78.85
       NISS |         38        3.57       82.42
       OLDS |          9        0.85       83.27
       PLYM |          8        0.75       84.02
       PONT |         25        2.35       86.37
       PTRB |         12        1.13       87.50
        SAA |          1        0.09       87.59
       STRG |          4        0.38       87.97
       STRN |         12        1.13       89.10
       SUBA |          8        0.75       89.85
       SUZI |          5        0.47       90.32
       TOYT |         81        7.61       97.93
       VOLK |         10        0.94       98.87
       VOLV |          9        0.85       99.72
       WHGM |          1        0.09       99.81
       WSTR |          1        0.09       99.91
       YAMA |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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