1975? how about 1865? there is a real chance we won't ever have free and fair elections again. The amount of people dying isn't relevant to measure stability. political stability and a safe environment for the conduct of commerce is.

Historical stability of China isn't relevant either, I think the modern PRC government of china is all that matters for practical purposes.

Historically, China has been around for like 3 millennia, so it isn't a fair comparison, or a meaningful one.