BARIUM.DES chnimp bchlimp befile6 affile6 afdec6 befile12 affile12 afdec12 chempi gas rtwex spr sum fall lchnimp lgas lrtwex lchempi t feb mar apr may jun jul aug sep oct nov dec percchn Obs: 131 1. chnimp Chinese imports, bar. chl. 2. bchlimp total imports bar. chl. 3. befile6 =1 for all 6 mos before filing 4. affile6 =1 for all 6 mos after filing 5. afdec6 =1 for all 6 mos after decision 6. befile12 =1 all 12 mos before filing 7. affile12 =1 all 12 mos after filing 8. afdec12 =1 all 12 mos after decision 9. chempi chemical production index 10. gas gasoline production 11. rtwex exchange rate index 12. spr =1 for spring months 13. sum =1 for summer months 14. fall =1 for fall months 15. lchnimp log(chnimp) 16. lgas log(gas) 17. lrtwex log(rtwex) 18. lchempi log(chempi) 19. t time trend 20. feb =1 if month is feb 21. mar =1 if month is march 22. apr 23. may 24. jun 25. jul 26. aug 27. sep 28. oct 29. nov 30. dec 31. percchn % imports from china