Frequencies for first 10,000 rows of ser_tr variable in person dataset : VIN Truck | series | Freq. Percent Cum. ------------+----------------------------------- | 7,207 72.07 72.07 400 | 1 0.01 72.08 40S | 14 0.14 72.22 44P | 6 0.06 72.28 600 | 18 0.18 72.46 700 | 7 0.07 72.53 70S | 1 0.01 72.54 720 | 6 0.06 72.60 800 | 1 0.01 72.61 80S | 6 0.06 72.67 90S | 1 0.01 72.68 920 | 14 0.14 72.82 940 | 8 0.08 72.90 990 | 3 0.03 72.93 ACA | 3 0.03 72.96 ARO | 12 0.12 73.08 AST | 44 0.44 73.52 AVL | 23 0.23 73.75 B22 | 2 0.02 73.77 B23 | 2 0.02 73.79 B25 | 2 0.02 73.81 B30 | 3 0.03 73.84 B40 | 1 0.01 73.85 BRO | 1 0.01 73.86 C10 | 6 0.06 73.92 C15 | 4 0.04 73.96 C20 | 4 0.04 74.00 C25 | 2 0.02 74.02 C35 | 1 0.01 74.03 C60 | 1 0.01 74.04 C6V | 2 0.02 74.06 C85 | 1 0.01 74.07 CAL | 23 0.23 74.30 CAR | 47 0.47 74.77 CF | 1 0.01 74.78 CHA | 37 0.37 75.15 CHK | 19 0.19 75.34 CMD | 1 0.01 75.35 CMP | 2 0.02 75.37 CNV | 6 0.06 75.43 COE | 3 0.03 75.46 COF | 261 2.61 78.07 COL | 4 0.04 78.11 CON | 247 2.47 80.58 CSC | 20 0.20 80.78 CSR | 4 0.04 80.82 CTV | 35 0.35 81.17 CWS | 1 0.01 81.18 D15 | 1 0.01 81.19 D21 | 8 0.08 81.27 DAK | 58 0.58 81.85 DIS | 2 0.02 81.87 DRW | 26 0.26 82.13 E/X | 7 0.07 82.20 ECO | 42 0.42 82.62 ENV | 44 0.44 83.06 ESC | 6 0.06 83.12 ETV | 4 0.04 83.16 EXP | 28 0.28 83.44 FM2 | 10 0.10 83.54 FRE | 2 0.02 83.56 FRR | 1 0.01 83.57 FRT | 42 0.42 83.99 FTR | 1 0.01 84.00 GCK | 84 0.84 84.84 GM4 | 106 1.06 85.90 HIN | 3 0.03 85.93 HLX | 1 0.01 85.94 HTP | 17 0.17 86.11 HUM | 2 0.02 86.13 J/E | 3 0.03 86.16 JMY | 11 0.11 86.27 K10 | 2 0.02 86.29 K20 | 4 0.04 86.33 K25 | 2 0.02 86.35 K30 | 1 0.01 86.36 KOD | 1 0.01 86.37 LIB | 20 0.20 86.57 MAX | 1 0.01 86.58 MCV | 7 0.07 86.65 MHV | 1 0.01 86.66 MON | 3 0.03 86.69 NPR | 7 0.07 86.76 P30 | 2 0.02 86.78 PRO | 9 0.09 86.87 PRT | 2 0.02 86.89 R/V | 7 0.07 86.96 RAI | 2 0.02 86.98 RID | 5 0.05 87.03 RMV | 2 0.02 87.05 RNG | 103 1.03 88.08 RPC | 199 1.99 90.07 RRV | 3 0.03 90.10 RSP | 2 0.02 90.12 S | 54 0.54 90.66 S/V | 3 0.03 90.69 S15 | 5 0.05 90.74 SAF | 11 0.11 90.85 SAV | 5 0.05 90.90 SIE | 123 1.23 92.13 SIL | 238 2.38 94.51 SNR | 3 0.03 94.54 SON | 11 0.11 94.65 SRW | 95 0.95 95.60 SS | 1 0.01 95.61 STE | 8 0.08 95.69 STV | 4 0.04 95.73 T10 | 2 0.02 95.75 TAC | 81 0.81 96.56 TOP | 4 0.04 96.60 TRK | 25 0.25 96.85 TTN | 21 0.21 97.06 TUN | 52 0.52 97.58 TWC | 17 0.17 97.75 UDS | 2 0.02 97.77 UHT | 4 0.04 97.81 UPL | 14 0.14 97.95 VAN | 31 0.31 98.26 VOF | 1 0.01 98.27 VOV | 2 0.02 98.29 VTR | 10 0.10 98.39 VVN | 42 0.42 98.81 W/T | 23 0.23 99.04 W/Y | 10 0.10 99.14 W10 | 1 0.01 99.15 W20 | 3 0.03 99.18 WCN | 1 0.01 99.19 WIN | 13 0.13 99.32 WRA | 6 0.06 99.38 WUL | 1 0.01 99.39 XCB | 8 0.08 99.47 XPD | 2 0.02 99.49 YUK | 51 0.51 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016