Tolong jelaskan mengenai Penjualan dari Attack on Titan

In April 2014, Oricon reported that 30 million volumes of the series have been sold. By November 2014, the manga had 45 million copies in print. By December 2019, the number had increased to 100 million. The series' twelfth collected volume was given a first printing of 2.2 million copies, making Attack on Titan one of only two manga series ever to get an initial print surpassing 2 million, the other being One Piece. Volume 13 has the highest initial first print of the series so far, with 2,750,000 copies. It is also the first print run record for its publisher, Kodansha. Attack on Titan was the second highest selling manga series of 2013, with 15,933,801 copies sold in a single year. In the first half of 2014 it topped the chart, ending One Pieces five-year reign as the highest selling series in that period, with Isayama surprised about it and thanking the readers. By the end of the year, it was the second best selling manga with 11,728,368 copies sold. In 2015, the series sold 8,778,048 copies ranking third for the year, and 6,544,081 in 2016 for the fourth rank. Attack on Titan was the second best-selling manga of 2017 with sales of 6,622,781 copies, behind only One Piece. The manga's publisher, Kodansha, credits Attack on Titan for the company's first revenue increase in eighteen years. The anime is noted to have helped in boosting the series' sales while Mainichi Shimbun called it a "once-in-a-decade hit".

Six of the seven English volumes published in North America at the time charted on The New York Times Manga Best Seller list for the week of October 13, 2013, and volume one was on the list for 81 weeks straight. In June 2015, the first volume clocked in at its 100th week on the top 10 chart, having sold 2.5 million copies. It also currently holds the title of appearing on the list for a volume with 121 weeks. Volume one was also number one on Nielsen BookScan's list of top 20 graphic novels in American bookstores for October 2013, and for the month of September, the series had more volumes on the list than any other series.