How much radiation exposure do you get every year?

We were wondering how much radiation exposure we get each year from various sources, including medical tests.
We came across a website of the American Nuclear Society which featured an 'interactive dose chart.'
They indicate that the average dose per person from all sources of radiation is about 360 mrems (millirems) per year.
Fill in your individual data, and it will come up with your annual dosage of radiation as well as the amount you get from each individual type of exposure.
Here is the link: http://www.ans.org/pi/resources/dosechart/

We noticed that cell phone usage was not included and found a website of the Environmental Working Group (EWG), a non-profit organization that provides public information in order to protect public health and the environment. Among other things, their site provides information about various cell phones and their radiation outputs.
According to the EWG site, "cell phone radiation differs from the high-energy waves of X-rays and some nuclear waste emissions. Its lower energy 'non-ionizing' waves penetrate deeper into the body but lack the energy to break apart molecules.... More research is needed to pinpoint the ways that cell phone radiation could damage the body."
Here is the link to their website: http://www.ewg.org/cellphoneradiation/faq