Frequencies for n1 variable in countymd1989 dataset :

  Number of |
    returns |      Freq.     Percent        Cum.
------------+-----------------------------------
      7,822 |          1        4.00        4.00
      8,477 |          1        4.00        8.00
     10,683 |          1        4.00       12.00
     11,469 |          1        4.00       16.00
     13,970 |          1        4.00       20.00
     14,454 |          1        4.00       24.00
     14,478 |          1        4.00       28.00
     18,539 |          1        4.00       32.00
     22,888 |          1        4.00       36.00
     29,728 |          1        4.00       40.00
     30,471 |          1        4.00       44.00
     30,976 |          1        4.00       48.00
     32,645 |          1        4.00       52.00
     44,299 |          1        4.00       56.00
     52,043 |          1        4.00       60.00
     57,217 |          1        4.00       64.00
     66,013 |          1        4.00       68.00
     80,481 |          1        4.00       72.00
     82,902 |          1        4.00       76.00
    197,031 |          1        4.00       80.00
    301,424 |          1        4.00       84.00
    341,687 |          1        4.00       88.00
    344,664 |          1        4.00       92.00
    366,663 |          1        4.00       96.00
    2181024 |          1        4.00      100.00
------------+-----------------------------------
      Total |         25      100.00

by Jean Roth , jroth@nber.org , 23 Jun 2017