The correlation is not just in the USA, not just the past six years, for another.
And FWIW, the past thirty years have constant-dollar wages in the USA flat while productivity increased. (Household income increased due to increasing hours worked, mostly women.) The exception was during the 90s, when (despite predictions to the contrary) wages actually increased.
Facts on the US part readily available from the lovely search and visualization tools at the St. Lous Federal Reserve.