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 | 170 | 14,74% |
| 2020 | 148 | 15,50% |
| 2019 | 128 | 5,23% |
| 2018 | 122 | 6,99% |
| 2017 | 114 | 4,48% |
| 2016 | 109 | 6,13% |
| 2015 | 103 | 17,45% |
| 2014 | 87 | 13,61% |
| 2013 | 77 | 2,71% |
| 2012 | 75 | -1,77% |
| 2011 | 76 | 1,02% |
| 2010 | 75 |