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 | 280 | 16,87% |
| 2020 | 240 | 2,05% |
| 2019 | 235 | 13,74% |
| 2018 | 207 | 13,51% |
| 2017 | 182 | 14,28% |
| 2016 | 159 | -24,44% |
| 2015 | 211 | -20,02% |
| 2014 | 264 | 33,74% |
| 2013 | 197 | -26,32% |
| 2012 | 268 | 59,59% |
| 2011 | 168 | 85,90% |
| 2010 | 90 |