Frequencies for first 10,000 rows of designtype variable in plan2018 dataset :

    DesignType |      Freq.     Percent        Cum.
---------------+-----------------------------------
      Design 1 |        417        4.17        4.17
      Design 2 |        111        1.11        5.28
      Design 3 |         77        0.77        6.05
      Design 4 |         15        0.15        6.20
Not Applicable |      9,380       93.80      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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