  In this paper we compare the numbers of new top 2% researchers from China and
USA annually since 1980. We find that the log ratio of the numbers decreases
almost linearly over time. As early as 2009, the total number of new top 2%
researchers across all subfields from China exceeds that of USA. In particular,
such trend is more striking in many subfields, e.g., Engineering, Chemistry,
and Enabling & Strategic Technologies.
