1. Deathy Hallows Part 2 - 1.3 Billion

2. Deathy Hallows Part 1 - 977 Million

3. Philosophers Stone - 974.8 Million

4. Order of The Phoenix - 942.2 Million

5. Half Blood Prince - 934.5 Million

6. Goblet of Fire - 896.7 Million

7. Chamber of Secrets - 879.7 Million

8. Prisoner of Azkaban - 797.4 Million