you might be right.

The nine countries with the largest number of people with dementia in 2010
(1 million or more) were China (5.4 million), USA (3.9 million), India (3.7 million), Japan (2.5
million), Germany (1.5 million), Russia (1.2 million), France (1.1 million) Italy (1.1 million) and
Brazil (1.0 million).

Japan 127,341,000 2,500,000 rate=0.0196
china 1,367,180,000 5,400,000 rate=0.00395

that means 5 times.