The productivity is the power of create using resource in aa efficient way. the most you produce the less you have to sell, the less you produce demand goes down. The market growt is directly related to the productivity because the massive production of a good produces a decrease in price which creates issues in the economy, there are two ways to prevent this; one, increase the ammount of buyers or the existing buyers to buy more goods. when there is population growth the incomings are highers so with this the productivty reflects this growing directly on the market. In the way the population is growing, the market is being expanded, I.E. the online market is growing because the tech users is increasing at the same time.