Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN | Series-Truc | k | Freq. Percent Cum. ------------+----------------------------------- | 318 3.18 3.18 *** | 6,071 60.71 63.89 150 | 3 0.03 63.92 44P | 24 0.24 64.16 600 | 2 0.02 64.18 620 | 38 0.38 64.56 720 | 21 0.21 64.77 8MS | 1 0.01 64.78 999 | 1,699 16.99 81.77 A10 | 7 0.07 81.84 ART | 4 0.04 81.88 B18 | 1 0.01 81.89 B20 | 1 0.01 81.90 BRO | 4 0.04 81.94 BRT | 8 0.08 82.02 BUS | 2 0.02 82.04 C10 | 237 2.37 84.41 C15 | 50 0.50 84.91 C20 | 69 0.69 85.60 C25 | 21 0.21 85.81 C30 | 21 0.21 86.02 C35 | 4 0.04 86.06 C40 | 1 0.01 86.07 C50 | 5 0.05 86.12 C60 | 7 0.07 86.19 C65 | 6 0.06 86.25 C6M | 2 0.02 86.27 C6V | 4 0.04 86.31 CAB | 1 0.01 86.32 CGS | 4 0.04 86.36 CHA | 2 0.02 86.38 CHK | 5 0.05 86.43 CLU | 14 0.14 86.57 COE | 4 0.04 86.61 COF | 384 3.84 90.45 COL | 11 0.11 90.56 CON | 19 0.19 90.75 COU | 44 0.44 91.19 CPU | 3 0.03 91.22 CSC | 1 0.01 91.23 CTS | 51 0.51 91.74 CTV | 6 0.06 91.80 CWS | 2 0.02 91.82 D10 | 34 0.34 92.16 D15 | 9 0.09 92.25 D20 | 13 0.13 92.38 D30 | 2 0.02 92.40 D50 | 2 0.02 92.42 D5I | 13 0.13 92.55 D80 | 1 0.01 92.56 D95 | 3 0.03 92.59 DC9 | 1 0.01 92.60 DH9 | 1 0.01 92.61 DK9 | 2 0.02 92.63 ELC | 17 0.17 92.80 F95 | 1 0.01 92.81 FH9 | 2 0.02 92.83 FLS | 3 0.03 92.86 G35 | 1 0.01 92.87 HI9 | 1 0.01 92.88 HLX | 11 0.11 92.99 HTC | 13 0.13 93.12 HTP | 54 0.54 93.66 HTW | 8 0.08 93.74 J95 | 3 0.03 93.77 JEE | 44 0.44 94.21 JET | 5 0.05 94.26 JY7 | 1 0.01 94.27 K10 | 67 0.67 94.94 K15 | 12 0.12 95.06 K20 | 18 0.18 95.24 K30 | 2 0.02 95.26 K35 | 2 0.02 95.28 KOM | 7 0.07 95.35 LCH | 1 0.01 95.36 LDS | 6 0.06 95.42 LLN | 6 0.06 95.48 LSB | 1 0.01 95.49 LTC | 9 0.09 95.58 LUV | 56 0.56 96.14 M65 | 1 0.01 96.15 M95 | 1 0.01 96.16 MH9 | 1 0.01 96.17 MHC | 3 0.03 96.20 MHV | 16 0.16 96.36 MK2 | 1 0.01 96.37 MST | 1 0.01 96.38 MTH | 1 0.01 96.39 MXV | 12 0.12 96.51 MXW | 4 0.04 96.55 NC9 | 1 0.01 96.56 P30 | 7 0.07 96.63 PL5 | 2 0.02 96.65 PL6 | 23 0.23 96.88 PYS | 1 0.01 96.89 RAB | 1 0.01 96.90 RAN | 2 0.02 96.92 RPU | 1 0.01 96.93 S60 | 2 0.02 96.95 SCT | 15 0.15 97.10 SPO | 9 0.09 97.19 SPR | 4 0.04 97.23 SPT | 9 0.09 97.32 SS | 6 0.06 97.38 T50 | 1 0.01 97.39 T60 | 1 0.01 97.40 T65 | 1 0.01 97.41 TAL | 1 0.01 97.42 TM8 | 1 0.01 97.43 TNS | 10 0.10 97.53 TRA | 13 0.13 97.66 UNS | 1 0.01 97.67 VAN | 191 1.91 99.58 VOY | 1 0.01 99.59 W10 | 20 0.20 99.79 W15 | 1 0.01 99.80 W20 | 10 0.10 99.90 W30 | 1 0.01 99.91 W40 | 1 0.01 99.92 WAG | 6 0.06 99.98 XCO | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Apr 2016