Labels:text | line | screenshot | number | parallel | rectangle | font | plot OCR: INCREASE IN MONTHLY CALL VOLUME FULL-TIME EQUIVALENT STAFF 72% 14.0~ 70% 13.0 :66%- 12.0 Percent of responses 64%+ 11.05. Number of full-time staff 1992 1.993 1994 1992 1993 1994 Source:Help Desk Insituter Year Source: Help Desk institute Year Ebb and Flow. According to the Help Desk Institute, over the past three years the majority of companies sur- veyed have experienced an increase in call volume, while the number of full-time help desk staff has decreased.