They still have to fill 19% of their 4131 demand by immigration.
Occupation Projection 4131
Over the 2009-2018 period, an occupation will be in excess demand (a shortage of workers) if the projected job openings (arising from expansion demand and replacement demand) are greater than the projected job seekers (arising from school leavers, immigration and mobility), while an occupation will be in excess supply (a surplus of workers) if the projected job seekers are greater than the projected job openings. For College And Other Vocational Instructors, over the period of 2009-2018, job openings are expected to total 39,049. It is expected that 27,320 job seekers will be available to fill these job openings.
For 39,049 jobs they have only 27,320 applicants out of which 19% are immigrants
This means they need more immigrants for 4131 till 2018.
http://www.workingincanada.gc.ca/report-eng.do?area=25419&lang=en_CA&noc=4131&province=48&titleKeyword=&action=final&display=outlook