Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 136 1.36 1.36 *** | 6,247 62.47 63.83 150 | 1 0.01 63.84 200 | 2 0.02 63.86 250 | 1 0.01 63.87 300 | 2 0.02 63.89 30S | 2 0.02 63.91 400 | 1 0.01 63.92 40S | 14 0.14 64.06 44P | 57 0.57 64.63 600 | 37 0.37 65.00 620 | 6 0.06 65.06 700 | 1 0.01 65.07 70S | 1 0.01 65.08 720 | 35 0.35 65.43 80S | 7 0.07 65.50 90S | 37 0.37 65.87 920 | 4 0.04 65.91 930 | 3 0.03 65.94 937 | 1 0.01 65.95 999 | 470 4.70 70.65 ARO | 19 0.19 70.84 AST | 14 0.14 70.98 ATM | 1 0.01 70.99 B20 | 18 0.18 71.17 B22 | 26 0.26 71.43 B23 | 2 0.02 71.45 B26 | 2 0.02 71.47 B30 | 1 0.01 71.48 B40 | 2 0.02 71.50 BRO | 14 0.14 71.64 BSP | 3 0.03 71.67 BUS | 1 0.01 71.68 BVN | 14 0.14 71.82 BZR | 2 0.02 71.84 C10 | 114 1.14 72.98 C15 | 38 0.38 73.36 C20 | 37 0.37 73.73 C25 | 13 0.13 73.86 C30 | 16 0.16 74.02 C35 | 4 0.04 74.06 C50 | 3 0.03 74.09 C60 | 3 0.03 74.12 C65 | 1 0.01 74.13 C6M | 2 0.02 74.15 C6V | 6 0.06 74.21 C96 | 14 0.14 74.35 C97 | 4 0.04 74.39 CAR | 1 0.01 74.40 CCH | 5 0.05 74.45 CGS | 1 0.01 74.46 CHA | 2 0.02 74.48 CHK | 51 0.51 74.99 CLT | 3 0.03 75.02 CLU | 6 0.06 75.08 CNV | 6 0.06 75.14 COE | 82 0.82 75.96 COF | 405 4.05 80.01 COL | 18 0.18 80.19 COM | 4 0.04 80.23 CON | 245 2.45 82.68 COU | 6 0.06 82.74 CPS | 1 0.01 82.75 CSC | 1 0.01 82.76 CTS | 8 0.08 82.84 CTV | 25 0.25 83.09 CVS | 9 0.09 83.18 D10 | 11 0.11 83.29 D15 | 8 0.08 83.37 D20 | 13 0.13 83.50 D21 | 57 0.57 84.07 D30 | 4 0.04 84.11 D50 | 1 0.01 84.12 D51 | 3 0.03 84.15 D5I | 15 0.15 84.30 D95 | 1 0.01 84.31 DAK | 42 0.42 84.73 DC9 | 1 0.01 84.74 DEF | 1 0.01 84.75 EMH | 1 0.01 84.76 F44 | 1 0.01 84.77 FCC | 1 0.01 84.78 FE4 | 2 0.02 84.80 FE6 | 2 0.02 84.82 FK5 | 1 0.01 84.83 FM5 | 1 0.01 84.84 FSR | 1 0.01 84.85 GCK | 15 0.15 85.00 GM4 | 208 2.08 87.08 H95 | 5 0.05 87.13 HFA | 1 0.01 87.14 HFE | 1 0.01 87.15 HIC | 1 0.01 87.16 HSG | 1 0.01 87.17 HTC | 1 0.01 87.18 HTP | 167 1.67 88.85 INT | 1 0.01 88.86 JEE | 15 0.15 89.01 JET | 2 0.02 89.03 JMY | 2 0.02 89.05 K10 | 54 0.54 89.59 K15 | 16 0.16 89.75 K20 | 9 0.09 89.84 K25 | 6 0.06 89.90 K30 | 2 0.02 89.92 KOD | 4 0.04 89.96 LB1 | 1 0.01 89.97 LCH | 1 0.01 89.98 LDS | 3 0.03 90.01 LSB | 1 0.01 90.02 LTC | 3 0.03 90.05 LUM | 1 0.01 90.06 LUV | 9 0.09 90.15 M6V | 1 0.01 90.16 M95 | 2 0.02 90.18 MAX | 1 0.01 90.19 MCV | 3 0.03 90.22 MH9 | 1 0.01 90.23 MHC | 3 0.03 90.26 MHV | 28 0.28 90.54 MMX | 14 0.14 90.68 MON | 1 0.01 90.69 MRM | 1 0.01 90.70 MXV | 2 0.02 90.72 NAV | 1 0.01 90.73 NPR | 2 0.02 90.75 NRR | 2 0.02 90.77 P30 | 12 0.12 90.89 P52 | 1 0.01 90.90 P62 | 4 0.04 90.94 PAR | 1 0.01 90.95 PCC | 6 0.06 91.01 PUP | 9 0.09 91.10 PYS | 1 0.01 91.11 R/V | 7 0.07 91.18 R10 | 1 0.01 91.19 R15 | 2 0.02 91.21 R20 | 3 0.03 91.24 R25 | 2 0.02 91.26 R30 | 6 0.06 91.32 R35 | 2 0.02 91.34 R50 | 16 0.16 91.50 RAL | 4 0.04 91.54 RAM | 1 0.01 91.55 RBT | 1 0.01 91.56 RMV | 29 0.29 91.85 RNG | 178 1.78 93.63 RPC | 13 0.13 93.76 RRV | 1 0.01 93.77 S | 158 1.58 95.35 S/V | 18 0.18 95.53 S10 | 4 0.04 95.57 S15 | 15 0.15 95.72 S6M | 2 0.02 95.74 SAF | 13 0.13 95.87 SCR | 1 0.01 95.88 SCT | 6 0.06 95.94 SIE | 61 0.61 96.55 SON | 11 0.11 96.66 SPO | 1 0.01 96.67 SPR | 1 0.01 96.68 SPT | 5 0.05 96.73 SPX | 2 0.02 96.75 SS | 20 0.20 96.95 SXS | 1 0.01 96.96 SYC | 1 0.01 96.97 T10 | 6 0.06 97.03 TAC | 1 0.01 97.04 TNS | 1 0.01 97.05 TOP | 1 0.01 97.06 TRA | 6 0.06 97.12 TRK | 52 0.52 97.64 TRL | 2 0.02 97.66 TYP | 1 0.01 97.67 UDS | 5 0.05 97.72 UHT | 4 0.04 97.76 UNI | 2 0.02 97.78 V10 | 1 0.01 97.79 V15 | 3 0.03 97.82 V25 | 1 0.01 97.83 V30 | 2 0.02 97.85 VAN | 111 1.11 98.96 VMX | 1 0.01 98.97 VWG | 6 0.06 99.03 W/Y | 24 0.24 99.27 W10 | 5 0.05 99.32 W15 | 2 0.02 99.34 W20 | 5 0.05 99.39 W30 | 1 0.01 99.40 W51 | 3 0.03 99.43 WAG | 13 0.13 99.56 WCN | 5 0.05 99.61 WLC | 1 0.01 99.62 WMX | 2 0.02 99.64 WRA | 3 0.03 99.67 X44 | 13 0.13 99.80 XCB | 9 0.09 99.89 XCN | 1 0.01 99.90 XCO | 2 0.02 99.92 XPD | 3 0.03 99.95 YUK | 5 0.05 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016