Let's take factory workers making $10 per hour building Color Television Sets that sell for $1000 per unit. Over a five year period the price of the TV has steadily dropped to $375. Also, over the same period workers have gotten an average raise of $1.50. The workers benefit from the efficiency of mass production as consumers. Their salaries in relation to the price of the TV has increased. Even without the raises the man-hour per TV is now lower.
Now imagine building a TV yourself starting with a bucket of Sand, a few ounces of Silver, Gold and Copper, and a Barrel of oil in your bathroom and kitchen. How many man-hours per TV would that take.
You may point out the price of everything else in the economy has increased. However, this is not due to efficiency. This is really due to the debasement of the currency by the Central Bank. The Federal Reserve was created in 1913.
Here is a link to the BLS Inflation Calculator so you can see for yourself.