The table below shows the index of labour productivity for a tech hardware fabrication plant over a five-year period.
| Year | Index of labour productivity (2021=1002021 = 1002021=100) |
|---|---|
| 2019 | 116 |
| 2020 | 108 |
| 2021 | 100 |
| 2022 | 109 |
| 2023 | 120 |
The data show that over the period 2019 to 2023:
productivity fell faster between 2019 and 2020 than between 2020 and 2021.
the total volume of output produced at the plant was highest in 2023.
the total number of hours worked by employees at the plant must have increased between 2021 and 2022.
the average amount produced per labor hour rose at the fastest rate between 2022 and 2023.
