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 | 5 743 | 8,65% |
| 2020 | 5 286 | 11,49% |
| 2019 | 4 742 | -0,05% |
| 2018 | 4 744 | -0,21% |
| 2017 | 4 754 | 4,87% |
| 2016 | 4 533 | 3,29% |
| 2015 | 4 389 | -0,26% |
| 2014 | 4 400 | 1,48% |
| 2013 | 4 336 | 1,19% |
| 2012 | 4 285 | -6,15% |
| 2011 | 4 566 | 6,58% |
| 2010 | 4 284 |