Take a look at this link that quotes the US Bureau of Labor:
http://www.money-zine.com/Career-Development/Finding-a-Job/High-Paying-Careers/
Right now Management Occupations (Executives in business) are earning the highest, but this list goes changing all the time. If you are trying to decide what to do for your future I would recommend not choosing based on money but based on what you like (from personal experience).