Frequencies for first 10,000 rows of yearref variable in coest00intalldata dataset :

                                   Year |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
1 = 4/1/2000 resident population estima |     10,000      100.00      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Oct 2016