The same question is answered by my own "study", a typing speed website that has been collecting data since 2008. It uses only simple words to avoid becoming a

The same question is answered by my own "study", a typing speed website that has been collecting data since 2008. It uses only simple words to avoid becoming a reading test (or worse, a typing torture test). Halfway down the page at https://typing-speed-test.aoeu.eu/ https://typing-speed-test.aoeu.eu/ there's a histogram of the statistics, built out of 46 million completed tests. Because of the immense sample size, I've tried to keep the test compatible over time. Based on referrer logs I think the user base is incredibly diverse, although I have no specific statistical data on the participants. Unfortunately, the database (small SQLite file available on request) is aggregated and I don't have any data on the development of the statistics over time.