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 | 7 329 | 0,82% |
| 2020 | 7 270 | 1,94% |
| 2019 | 7 131 | 5,81% |
| 2018 | 6 740 | 5,36% |
| 2017 | 6 398 | 10,37% |
| 2016 | 5 797 | 3,79% |
| 2015 | 5 585 | -0,73% |
| 2014 | 5 626 | 4,33% |
| 2013 | 5 392 | 2,32% |
| 2012 | 5 270 | 1,82% |
| 2011 | 5 176 | 1,89% |
| 2010 | 5 080 |