With regard to the nature of shortages, if we compare the study of 2007 and the shortages today, the actual requirements with regard to filling indeterminate, permanent public service positions haven't changed, partly due to how departments are opting to deliver their service, such as the example you raised within Veterans Affairs. They have chosen to go with a third-party contract model for their occupational stress injury clinics. So their requirements, with regard to their medical officers and their district nursing officers, remain the same and their overarching requirement remains the same for indeterminate public servant physicians, and the same applies with the other departments.
So to answer your question, no, the shortages have not changed in the past three years.