| 2016 | 2018 | 2020 | 2022 | 2024 | ||
|---|---|---|---|---|---|---|
| Expenditure on R&D - Current prices | $m | 10,878 | 12,158 | 12,668 | 13,990 | 16,404 |
| Expenditure on R&D - Chain volume measures (a) | $m | 13,910 | 14,827 | 14,662 | 15,340 | 16,404 |
| Human resources devoted to R&D | PYE | 79,008 | 81,717 | 81,090 | 81,705 | 85,951 |
PYE - person years of effort
- The reference year for chain volume measures is 2024. Refer to the Chain volume measures section of the Methodology page for details.
Subsequent expenditure figures and supporting commentary relate to current price terms.