Page 1. "Key findings include" "The USM Research institutions collectively met the expected instructional productivity standards (averaging 5.7 courses per faculty member)."
Page 6. "Course unit is the prescribed measure in the governing policy on faculty workload but it is only one of several measures that can be used to consider the instructional activity and effectiveness of faculty. A second key measure is the production of semester credit hours (SCH). Credit hours are the sum of the course hours of all the students taking a class. For example, a 3 credit course with 10 students produces 30 semester credit hours."
Table 7. (Scroll down) The percentage of credit hours produced by all faculty including FT faculty and PT faculty. (The most recent data are for 2015-2016).
For USM as a whole, PT faculty produced 30 percent of all credit hours taught. (Note that most PT faculty teach as adjunct faculty, though not all.)
At UMBC, as throughout much of the University System of Maryland, PT faculty produced 31 percent of all credit hours taught.
Additional information on credit hours taught at UMBC is available through the Office of Institutional Research (OIR).
Credit hours taught, by department/major, are posted below and linked here. Check your own department's output by credit hour. The numbers are imposing.