Data Coverage: Scopus, 2001-2017
Date of Data Extraction: 24th August 2018
Note: Citation per article = [Total number of citation/Total number of articles]
A growing trend in the number of publications from 2001 to 2017 and with that, a commensurate increase in the number of citations until 2011. From 2012 to 2014, the number of citations averaged at about 167,500, before decreasing to 138,274 in 2015, 92,680 in 2016 and 40,750 in 2017.