As a measure of the productivity of the workers and the cost of production of the goods. In those that are important to inflation this figure can make market movements. If the reduced numbers can tell future switching.
A measure of the contribution of the workers and the cost of production of goods. On whose side the inflation figure could be important to make the market move. If the decline could reflect future changes.
A measure of the work of the workers and the production cost of the product. Condition that inflation is this number to make the market moves. If the falling numbers can tell the future change.