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 | 727 | 2,71% |
| 2020 | 707 | 1,08% |
| 2019 | 700 | 5,95% |
| 2018 | 661 | 13,76% |
| 2017 | 581 | -3,95% |
| 2016 | 605 | -5,87% |
| 2015 | 642 | -2,60% |
| 2014 | 659 | 1,56% |
| 2013 | 649 | 7,02% |
| 2012 | 607 | 12,37% |
| 2011 | 540 | 7,38% |
| 2010 | 503 |