It's well known.
"in 2008, 2009, and 2010, the Dui Hua Foundation estimated that 5,000 people were executed each year in China – far more than all other nations combined.[2] [1][3] [4] However, the estimated number of executions fell to 2,400 in 2013.[5] The precise number of executions is regarded as a state secret.[6]"
https://en.wikipedia.org/wiki/Capital_punishment_in_China
The US executed 40 - 50 people per year in those years. The US information is publicly available, of course.