21 films in one month but only 5 films ran for one week

As a record break 21 films were released during the month of July.But the sad part is that only 5 films ran for one week.
List of the film released during July
1. Sirithal Rasipein
2. Gnabangal
3. Unnai Kan Theduthe
4. Indra Viazha
5. Vamanan
6. Vaigai
7. Nee Unnai Arindhal
8. Thalai Eluthu
9. Pudhiya Payanam
10. Vedigundu Murugesan
11. Kadhal Kadhai
12. Achamundu Achamundu
13. Engal Asan
14. Pudhiya Parvai
15. Malayan
16. Aindham Padai
17. Modhi Vilayadu
18. Aaru Maname
19. Sindhanai Sei
20. Malai Malai
21. Anthony Yar
Out of these 21 films only five films did well at the box office for a week’s time.