Hans Rosling in a TED Talk discusses the history of individual health and wealth from 1858 through today and into the future.
He discusses the importance of national sovereignty, which helped Japan from 1858 to 1949 when India and China did not have it.
I will give the punchline date at the end of this article after the video.
Spoiler room before giving the date.
Here is the date that Hans Rosling gives -
June 27, 2048.
I think for China it will be 2044 and for India it will be 2055.