Which leagues send players off most?

Red cards per match. The answer is a continent, not a country.

Primera Division (El Salvador) sends players off more often than any other: 1,33 red cards a match.

Which leagues send players off most?
League	Reds per match	Matches
1. Primera Division El Salvador	1.33	528
2. Primera C Argentina	1.28	674
3. Serie D Brazil	1.25	681
4. Reserve League Argentina	1.24	556
5. FAW Championship Xứ Wales	1.18	502
6. 2. Lig Thổ Nhĩ Kỳ	1.17	750
7. Conference South Anh	1.14	526
8. Liga Alef Israel	1.12	503
9. Torneo Federal A Argentina	0.773	1.271
10. Division 1 Ả Rập Xê-út	0.731	658
11. Primera B Metropolitana Argentina	0.684	886
12. BGL Ligue Luxembourg	0.581	664
13. 1. Division Kazakhstan	0.522	515
14. Primera División Bolivia	0.506	1.821
15. Giải bóng đá vô địch quốc gia Iran Iran	0.491	613
16. Ligue 1 Tunisia	0.485	613
17. 1 Lyga Litva	0.476	624
18. Segunda División Peru	0.475	814
19. Championnat National Pháp	0.472	1.342
20. Liga Nacional Honduras	0.468	1.013
21. Liga Nacional Guatemala	0.461	1.413
22. Ligue 1 Algeria	0.444	734
23. Primera División Peru	0.438	2.824
24. Prva Liga Serbia	0.416	866
25. Primera B Chile	0.407	1.654
26. Second League - Group 1 Nga	0.404	792
27. Liga 3 Bồ Đào Nha	0.404	1.275
28. Primera División Uruguay	0.403	1.068
29. Liga Pro Ecuador	0.402	1.827
30. Primera División Costa Rica	0.399	1.809
31. Division Profesional - Clausura Paraguay	0.395	864
32. Primera División Chile	0.392	2.018
33. Liga 2 Indonesia	0.391	937
34. Primera División Venezuela	0.39	1.667
35. Second League - Group 3 Nga	0.39	1.001
36. Second League - Group 4 Nga	0.387	561
37. Liga de Expansión MX Mexico	0.383	1.746
38. Serie C Brazil	0.373	1.013
39. Second League - Group 2 Nga	0.372	869
40. Liga Panameña de Fútbol Panama	0.367	870

Showing every competition. Major competitions only

Second yellows count as the red they produce, exactly as the provider records them. Cups are left out: a cup draws an amateur side against a champion, which is a different game.