Frequencies for a7_1_c3_4 variable in hcris2552_10_2010 dataset :

   building |
improvement |
          s |
    a700001 |
00400 00300 |      Freq.     Percent        Cum.
------------+-----------------------------------
   -6241650 |          1        0.04        0.04
    -986677 |          1        0.04        0.09
    -557064 |          1        0.04        0.13
      11526 |          1        0.04        0.17
     489722 |          1        0.04        0.22
    1025450 |          1        0.04        0.26
    1893164 |          1        0.04        0.30
          . |      2,315       99.70      100.00
------------+-----------------------------------
      Total |      2,322      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018