"The number of children diagnosed with autism or related disorders has grown at what many call an alarming rate. In the 1970s and 1980s, about one out of every 2,000 children had autism. Today, the CDC estimates that one in 150 8-year-olds in the U.S. has an autism spectrum disorder, or ASD."
http://www.webmd.com/brain/autism/searching-for-answers/autism-rise

Maybe you Kyriacos could read more informative books...hahahahaha