The iCite database was last updated on February 22, 2017 and currently contains 15,845,728 publications, of which 11,697,919 have an RCR greater than 0. iCite covers the years 1995 through 2017.
The distribution of RCRs for publications with RCR greater than 0 is shown above, with the tail truncated at 5.
NIH-funded papers are the benchmark for RCR: Any paper with RCR 1.0 has an RCR higher than 50% of NIH-funded papers. Some other RCR percentiles for NIH-funded papers are shown below.
The iCite database contains many papers that were not NIH-funded. RCR percentiles for the full iCite database are shown below.