https://www.iqvia.com/-/media/iqvia/pdfs/ap-location-site/japan/thought-leadership/top-line-market-data/2018/toplinedata_cy_2018.pdf?la=ja-jp&;hash=EE22508EEF2F60C3E7EA7A666AC6EEE794F1D34D&_=1550755994892

-18.4%