Frequencies for first 10,000 rows of dob_mm variable in natlterr2010 dataset :

Birth Month |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,261       32.61       32.61
          2 |        700        7.00       39.61
          3 |        639        6.39       46.00
          4 |        584        5.84       51.84
          5 |        589        5.89       57.73
          6 |        588        5.88       63.61
          7 |        583        5.83       69.44
          8 |        629        6.29       75.73
          9 |        630        6.30       82.03
         10 |        598        5.98       88.01
         11 |        597        5.97       93.98
         12 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015