Here Oricon Manga sales from November 17, 2014 to November 22, 2015.
Top 10 Best Selling Manga Series 2015
1 - One Piece (14,102,521 copies).
2 - Nanatsu no Taizai (10,304,112 copies).
3 - Shingeki no Kyojin (8,778,048 copies).
4 - Assasination Classroom (8,605,861 copies).
5 - Kingdom (8,569,215 copies).
6 - Haikyû!! (6,531,508 copies).
7 - Shokugeki no Souma (4,321,830 copies).
8 - Terra Formars (4,188,158 copies).
9 - Prison School (4,058,119 copies).
10 - Tokyo Ghoul:re (3,758,541 copies).
http://www.oricon.co.jp/special/48458/7/
Top 50 Highest Selling Manga Volumes 2015
1 - One Piece 76 (3,185,018 copies)
2 - One Piece 77 (3,020,137 copies)
3 - One Piece 78 (2,977,466 copies)
4 - One Piece 79 (2,810,583 copies)
5 - Shingeki no Kyojin 15 (2,000,137) copies)
6 - Shingeki no Kyojin 16 (1,920,780 copies)
7 - Shingeki no Kyojin 17 (1,807,155 copies)
8 - Naruto 72 (1,324,693 copies)
9 - Tokyo Ghoul:re 01 (1,017,871 copies)
10 - Assassination Classroom 12 (1,012,500 copies)
http://www.oricon.co.jp/special/48458/5/
http://www.oricon.co.jp/special/48458/6/