http://qablog.practitest.com/wp-content/uploads/2017/03/State_of_testing_2017_final_report.pdf
And the 2018 edition in the preparation:
http://qablog.practitest.com/state-of-testing/
Quoting;
"What is the State of Testing?
The State of Testing™ seeks to identify the existing characteristics, practices, and challenges facing the testing community in hopes to shed light and provoke a fruitful discussion towards improvement.
The final report is translated into several languages and shared globally, further expanding the reach and impact this report has on all of us in the QA world.
This is the 5th year that the QA Intelligence Blog is running this survey in collaboration with TeaTime with Testers, and with your help, it can be bigger and more comprehensive than in previous years.
Each year the amount of participants has increased, and the final reports become even more valuable as a culminated reflection of testing trends, challenges, and characteristics."