Here is data on total emissions over time.

https://ourworldindata.org/co2-and-other-greenhouse-gas-emis...

edit: being nicer

Ah, OK. This is all time total. I was referring to current annual emissions.

Definitely two different things.

At projected rates when will China "catch up" in terms of all time total?

Just back of the envelope calculation, according to my link the US emitted 400B tons total and China is emitting ~10.8B annually now, so that'd be 37 years with no growth. So yes, the US is in a really deep hole here.

It wouldn't surprise me if the Chinese somehow manage to never exceed 400B tons.

They're already at 200B and the rate is currently at 10B/year and rising rapidly.

So I strongly suspect they will.

Whoops, right. I forgot to subtract what they had already emitted. So it puts it more like ~20 years away.

Did you also forget to add what US keeps emitting?