| 1 | The demand for tea is on the decrease (each year). | |
| 2 | There has been a progressive decrease in population every year in this city. | |
| 3 | Increase in productivity is accompanied by a progressive decrease in production costs. | |
| 4 | Yet he believes many have reached a point of diminishing returns. | |
| 5 | But even there, the risk is of diminishing returns. |