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 | 7 744 | 46,07% |
| 2020 | 5 301 | -3,63% |
| 2019 | 5 501 | -0,06% |
| 2018 | 5 504 | 6,89% |
| 2017 | 5 150 | -0,08% |
| 2016 | 5 154 | 4,17% |
| 2015 | 4 947 | 6,05% |
| 2014 | 4 665 | -0,82% |
| 2013 | 4 704 | -6,62% |
| 2012 | 5 037 | -11,55% |
| 2011 | 5 695 | -19,49% |
| 2010 | 7 074 |