Figures in constant (2020) US$ are present according to calendar year, calculated on the assumption that, where financial years do not correspond to calendar years, spending is distributed evenly through the year
| Дата | Значение | Изменение , % |
|---|---|---|
| 2021 | 705 | -1,85% |
| 2020 | 718 | 11,21% |
| 2019 | 646 | 6,78% |
| 2018 | 605 | 5,15% |
| 2017 | 575 | 2,93% |
| 2016 | 559 | 7,50% |
| 2015 | 520 | 8,83% |
| 2014 | 478 | 7,04% |
| 2013 | 446 | 3,30% |
| 2012 | 432 | 16,83% |
| 2011 | 370 | 6,40% |
| 2010 | 347 |