Frequencies for first 10,000 rows of ser_tr variable in person dataset : vin truck | series | Freq. Percent Cum. ------------+----------------------------------- | 7,298 72.98 72.98 20S | 1 0.01 72.99 3/5 | 2 0.02 73.01 40S | 28 0.28 73.29 44P | 4 0.04 73.33 600 | 27 0.27 73.60 700 | 3 0.03 73.63 70S | 1 0.01 73.64 80S | 4 0.04 73.68 90S | 2 0.02 73.70 910 | 3 0.03 73.73 920 | 12 0.12 73.85 930 | 1 0.01 73.86 937 | 1 0.01 73.87 940 | 6 0.06 73.93 990 | 5 0.05 73.98 ACA | 3 0.03 74.01 ARO | 6 0.06 74.07 AST | 23 0.23 74.30 AVL | 36 0.36 74.66 B23 | 2 0.02 74.68 B25 | 2 0.02 74.70 B26 | 1 0.01 74.71 B30 | 3 0.03 74.74 B40 | 1 0.01 74.75 BRO | 2 0.02 74.77 C/C | 4 0.04 74.81 C10 | 13 0.13 74.94 C15 | 10 0.10 75.04 C55 | 4 0.04 75.08 C60 | 1 0.01 75.09 C75 | 3 0.03 75.12 CAL | 12 0.12 75.24 CAN | 2 0.02 75.26 CAR | 44 0.44 75.70 CHA | 23 0.23 75.93 CHK | 39 0.39 76.32 CMD | 2 0.02 76.34 CMP | 1 0.01 76.35 CNV | 5 0.05 76.40 COE | 6 0.06 76.46 COF | 265 2.65 79.11 COL | 4 0.04 79.15 CON | 201 2.01 81.16 CSC | 23 0.23 81.39 CSR | 7 0.07 81.46 CTV | 41 0.41 81.87 CWS | 4 0.04 81.91 D10 | 1 0.01 81.92 D20 | 2 0.02 81.94 D21 | 7 0.07 82.01 DAK | 39 0.39 82.40 DEN | 3 0.03 82.43 DIS | 4 0.04 82.47 DRW | 29 0.29 82.76 ECO | 11 0.11 82.87 ELC | 3 0.03 82.90 ENV | 15 0.15 83.05 EQU | 2 0.02 83.07 ESC | 1 0.01 83.08 ETV | 1 0.01 83.09 EXP | 9 0.09 83.18 FCC | 1 0.01 83.19 FK6 | 1 0.01 83.20 FM2 | 5 0.05 83.25 FRT | 23 0.23 83.48 GCK | 98 0.98 84.46 GM4 | 85 0.85 85.31 HFE | 2 0.02 85.33 HIN | 4 0.04 85.37 HOM | 2 0.02 85.39 HTP | 32 0.32 85.71 HUM | 7 0.07 85.78 J/E | 2 0.02 85.80 JEE | 1 0.01 85.81 JET | 1 0.01 85.82 JMY | 8 0.08 85.90 K10 | 7 0.07 85.97 K15 | 1 0.01 85.98 K20 | 1 0.01 85.99 K25 | 1 0.01 86.00 LIB | 22 0.22 86.22 LLN | 1 0.01 86.23 LR4 | 2 0.02 86.25 MCV | 4 0.04 86.29 MHV | 1 0.01 86.30 MMX | 1 0.01 86.31 MON | 1 0.01 86.32 MRK | 3 0.03 86.35 NPR | 3 0.03 86.38 NQR | 1 0.01 86.39 P30 | 4 0.04 86.43 P52 | 1 0.01 86.44 PCC | 1 0.01 86.45 PRO | 16 0.16 86.61 PRT | 4 0.04 86.65 PUP | 3 0.03 86.68 R/V | 1 0.01 86.69 R10 | 2 0.02 86.71 R20 | 1 0.01 86.72 R30 | 1 0.01 86.73 RAI | 2 0.02 86.75 RID | 4 0.04 86.79 RMV | 4 0.04 86.83 RNG | 98 0.98 87.81 RPC | 208 2.08 89.89 RRV | 6 0.06 89.95 RSP | 4 0.04 89.99 S | 46 0.46 90.45 S/V | 13 0.13 90.58 S15 | 2 0.02 90.60 SAF | 11 0.11 90.71 SAV | 3 0.03 90.74 SIE | 117 1.17 91.91 SIL | 239 2.39 94.30 SON | 7 0.07 94.37 SPR | 1 0.01 94.38 SRW | 86 0.86 95.24 SS | 2 0.02 95.26 STE | 7 0.07 95.33 STV | 1 0.01 95.34 T10 | 1 0.01 95.35 T7F | 1 0.01 95.36 TAC | 120 1.20 96.56 TER | 5 0.05 96.61 TRK | 17 0.17 96.78 TSP | 7 0.07 96.85 TTN | 23 0.23 97.08 TUN | 38 0.38 97.46 TWC | 18 0.18 97.64 UHT | 4 0.04 97.68 UPL | 2 0.02 97.70 V35 | 2 0.02 97.72 VAN | 8 0.08 97.80 VOF | 7 0.07 97.87 VTR | 24 0.24 98.11 VVN | 42 0.42 98.53 W/T | 21 0.21 98.74 W/Y | 8 0.08 98.82 W10 | 1 0.01 98.83 W20 | 2 0.02 98.85 WCN | 2 0.02 98.87 WIN | 17 0.17 99.04 WRA | 12 0.12 99.16 WUL | 11 0.11 99.27 X44 | 1 0.01 99.28 XCB | 3 0.03 99.31 Y/D | 1 0.01 99.32 YUK | 68 0.68 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016