here is an article, may be help you 

Matern Child Health J. 2015 Feb 21. [Epub ahead of print]

Age at Autism Spectrum Disorder (ASD) Diagnosis by Race, Ethnicity, and Primary Household Language Among Children with Special Health Care Needs, United States, 2009-2010.

Jo H1, Schieve LA, Rice CE, Yeargin-Allsopp M, Tian LH, Blumberg SJ, Kogan MD, Boyle CA.

 Thank you Dr Duman, happy to see more statistics, especially, in the middle east region.

Hi Ahmad,

See article .... Matson, J. L., & Kozlowski, A. M. (2011). The increasing prevalence of autism spectrum disorders. Research in Autism Spectrum Disorders, 5(1), 418-425.

They quote Eapen, Mabrouk, Zoubeidi, and Yunis (2007) studied 694 three-year olds in the United Arab Emirates. They reported 58 children per 10,000 with autistic features.

V. Eapen, A.A. Mabrouk, T. Zoubeidi, F. Yunis

Prevalence of pervasive developmental disorders in preschool children in the UAE

Journal of Tropical Pediatrics, 53 (2007), pp. 202–205

Cheers,

Michelle

 Thank you so much dear Michelle Somerton for your valuable resources. I had some difficulty to get such statistics.

Thank you Dear Nordahl-Hansen

Please take a look at this useful link.

http://www.hrpub.org/download/20180228/UJCM2-16910947.pdf

https://www.who.int/news-room/fact-sheets/detail/autism-spectrum-disorders