Frequencies for first 10,000 rows of proc43d variable in namcs2013 dataset : Procedure 4 | - 3 digit | Freq. Percent Cum. ------------+----------------------------------- -9 | 9,815 98.15 98.15 039 | 1 0.01 98.16 121 | 1 0.01 98.17 122 | 2 0.02 98.19 135 | 1 0.01 98.20 137 | 3 0.03 98.23 142 | 1 0.01 98.24 174 | 1 0.01 98.25 181 | 1 0.01 98.26 218 | 1 0.01 98.27 220 | 1 0.01 98.28 221 | 1 0.01 98.29 294 | 1 0.01 98.30 389 | 1 0.01 98.31 392 | 1 0.01 98.32 399 | 1 0.01 98.33 554 | 1 0.01 98.34 555 | 1 0.01 98.35 689 | 1 0.01 98.36 704 | 1 0.01 98.37 778 | 1 0.01 98.38 803 | 1 0.01 98.39 819 | 1 0.01 98.40 836 | 1 0.01 98.41 852 | 1 0.01 98.42 861 | 2 0.02 98.44 872 | 2 0.02 98.46 877 | 1 0.01 98.47 886 | 1 0.01 98.48 890 | 23 0.23 98.71 892 | 1 0.01 98.72 893 | 15 0.15 98.87 895 | 15 0.15 99.02 902 | 1 0.01 99.03 905 | 11 0.11 99.14 909 | 2 0.02 99.16 913 | 4 0.04 99.20 916 | 1 0.01 99.21 919 | 3 0.03 99.24 930 | 1 0.01 99.25 935 | 1 0.01 99.26 941 | 1 0.01 99.27 950 | 34 0.34 99.61 951 | 2 0.02 99.63 954 | 4 0.04 99.67 965 | 2 0.02 99.69 992 | 2 0.02 99.71 993 | 2 0.02 99.73 994 | 5 0.05 99.78 995 | 21 0.21 99.99 999 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 27 Mar 2017