In the past 15 years, the healthcare economy has pumped out 4.5 million new jobs, and a dozen of the 30 fastest-growing occupations are related to healthcare. Last month, the unemployment rate took its biggest jump in 22 years, but healthcare continued to add thousands of jobs. And the healthcare economy is only bound to grow larger: The aging baby boomer population is about to spur a new wave of healthcare needs, and advances in technology are improving the survival rate of terminally ill and injured patients.