| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. | | | | | 2. · | | | 3. | | 4. | | | 5. | | GDP | | 6. | | | 7. | | | | | | | 8. PM 2.5 | 2.5 | | 9. | | | 10. | | | 11. | | | 12. | | | 13. | | 14. | | | 12 | 15. | | 16. | | 17. | | | | | 18. | | | 19. | | | 20. | | | | | 21. | | | | | |