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 | 141 | 9,64% |
| 2020 | 129 | -33,98% |
| 2019 | 195 | -38,51% |
| 2018 | 318 | 40,46% |
| 2017 | 226 | -56,89% |
| 2016 | 525 | -70,81% |
| 2015 | 1 797 | -19,72% |
| 2014 | 2 238 | 30,38% |
| 2013 | 1 717 | -0,59% |
| 2012 | 1 727 | -36,14% |
| 2011 | 2 704 | 42,31% |
| 2010 | 1 900 |