It's a bit complicated. Some genres of comics are seeing a drop in sales, while others are holding steady or even growing. It depends on factors like marketing, popularity of characters, and the quality of the storylines.
According to the official data, the total sales of comics in the world were as follows:
1 Dragon Ball- 26400000 copies
2 One Piece- 19050000 copies
3. Attack on Titan-14.3 million copies
4 Naruto- 13800000 copies
5. Death (Bleach) - 13000000 copies
6 Crayon Shin-chan- 9900000 copies
7 Demon Slayer- 9800000 copies
8 Gintama- 9700000 copies
A Certain Scientific Railgun- 9400000 copies
10 Inuyasha- 8700000 copies
It is important to note that this is only a rough estimate. The actual sales may vary according to different publishing companies, different countries, or different reader groups.
Comic book movies can have a positive impact on comic sales. They introduce the characters and storylines to a wider audience, who then might want to explore the comics. However, it's not always a straightforward increase; factors like the quality of the movie and the existing fan base also play a role.