Frequencies for first 10,000 rows of pct012m149 variable in sf12010860us32 dataset :

   42 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,779       97.79       97.79
          1 |        199        1.99       99.78
          2 |         17        0.17       99.95
          3 |          3        0.03       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017