From 1900 to 1929 what happened to the salary of an average worker in the united states

The salaries increased, sometimes drastically some times slowly. An average worker in the 1900 had a salary between 256$ and $439 per year, while in 1929 the average salary was between 752$ and 1164$ per year. This all stopped and became much much worse when the great depression hit in the thirties which left the economy devastated.