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 | 289 | 9,73% |
| 2020 | 263 | -4,17% |
| 2019 | 275 | 5,13% |
| 2018 | 262 | -11,74% |
| 2017 | 296 | 27,16% |
| 2016 | 233 | 16,92% |
| 2015 | 199 | -1,74% |
| 2014 | 203 | -29,49% |
| 2013 | 288 | -2,32% |
| 2012 | 295 | 10,22% |
| 2011 | 267 | -6,89% |
| 2010 | 287 |