Publication number of articles describing the application of isotope ratio analysis to areas of science ranging from archaeology to zoology have increased approx. 10-fold from 1980-89 (#132) to 1990-99 (#1582). The number then doubled in 2000-09 (#3063) and this number increased by approx. 30% in 2010-19 (#3937). Total number of IRMS papers between 1980 and 2019 (to date) is 8714.