Guess my kpop biases by their birth year

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Across
  1. 3. Loona~99
  2. 4. Kep1er~02
  3. 7. &Team~04
  4. 8. Golden Child~98
  5. 9. The Boyz~00
  6. 11. Le Sserafim~06
  7. 12. Exo~92
  8. 15. Newjeans~04
  9. 16. Just B~01
  10. 17. Cravity~02
  11. 21. Ateez~99
  12. 22. Treasure~00
  13. 23. Twice~96
  14. 24. Everglow~98
  15. 25. Enhypen~02
  16. 26. Nct~00
  17. 27. Victon~99
  18. 28. Mcnd~04
  19. 29. (G)I-dle~97
Down
  1. 1. Dreamcatcher~95
  2. 2. Bts~97
  3. 4. Onewe~00
  4. 5. Mamamoo~91
  5. 6. Oneus~98
  6. 10. Aespa~00
  7. 13. Txt~99
  8. 14. Seventeen~95
  9. 18. Tempest~01
  10. 19. Itzy~03
  11. 20. IVE~07
  12. 22. Red Velvet~99