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 | 409 | 16,83% |
| 2020 | 350 | -16,32% |
| 2019 | 419 | 3,88% |
| 2018 | 403 | -5,65% |
| 2017 | 427 | 9,04% |
| 2016 | 392 | 4,44% |
| 2015 | 375 | 16,16% |
| 2014 | 323 | 0,34% |
| 2013 | 322 | 38,46% |
| 2012 | 232 | 3,86% |
| 2011 | 224 | 10,40% |
| 2010 | 203 |