Ordinal numbers

Across

8. 40th
9. 18th
10. 3rd
11. 75th
14. 57th
16. 13th
17. 9th
18. 12th
19. 50th
20. 99th

Down

1. 15th
2. 44th
3. 1st
4. 68th
5. 20th
6. 30th
7. 26th
9. 11th
12. 8th
13. 80th
14. 5th
15. 2nd