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 | 17 | -35,10% |
| 2020 | 26 | 98,62% |
| 2019 | 13 | -9,29% |
| 2018 | 15 | 73,37% |
| 2017 | 8 | 7,88% |
| 2016 | 8 | -2,86% |
| 2015 | 8 | 45,12% |
| 2014 | 6 | 4,65% |
| 2013 | 5 | |
| 2011 | 0 | |
| 2010 | 0 | |
| 2009 | 0 |