Frequencies for first 10,000 rows of ssamsa variable in pos1991 dataset : ssa msa | code | Freq. Percent Cum. ------------+----------------------------------- | 15 0.15 0.15 033 | 406 4.06 4.21 034 | 43 0.43 4.64 038 | 33 0.33 4.97 055 | 99 0.99 5.96 074 | 286 2.86 8.82 083 | 50 0.50 9.32 119 | 51 0.51 9.83 127 | 74 0.74 10.57 133 | 14 0.14 10.71 150 | 36 0.36 11.07 154 | 303 3.03 14.10 162 | 45 0.45 14.55 190 | 38 0.38 14.93 193 | 44 0.44 15.37 195 | 45 0.45 15.82 199 | 64 0.64 16.46 208 | 184 1.84 18.30 211 | 38 0.38 18.68 225 | 32 0.32 19.00 253 | 43 0.43 19.43 322 | 213 2.13 21.56 328 | 1,704 17.04 38.60 356 | 19 0.19 38.79 359 | 41 0.41 39.20 373 | 127 1.27 40.47 374 | 66 0.66 41.13 379 | 97 0.97 42.10 418 | 430 4.30 46.40 433 | 115 1.15 47.55 448 | 462 4.62 52.17 449 | 28 0.28 52.45 472 | 39 0.39 52.84 482 | 40 0.40 53.24 488 | 427 4.27 57.51 499 | 268 2.68 60.19 510 | 51 0.51 60.70 523 | 418 4.18 64.88 526 | 326 3.26 68.14 529 | 245 2.45 70.59 534 | 97 0.97 71.56 535 | 36 0.36 71.92 537 | 97 0.97 72.89 580 | 86 0.86 73.75 595 | 18 0.18 73.93 607 | 131 1.31 75.24 613 | 32 0.32 75.56 620 | 82 0.82 76.38 625 | 68 0.68 77.06 665 | 23 0.23 77.29 670 | 25 0.25 77.54 999 | 2,246 22.46 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016