Frequencies for morecodeinfo4 variable in enfrep20180404 dataset :

                       More Code Info 4 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |        151       99.34       99.34
1636MM0140  1636MM0141  1636MM0142  1.. |          1        0.66      100.00
----------------------------------------+-----------------------------------
                                  Total |        152      100.00

by Jean Roth , jroth@nber.org , 6 Apr 2018