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 | 13 015 | -0,54% |
| 2020 | 13 086 | 5,75% |
| 2019 | 12 374 | 10,91% |
| 2018 | 11 157 | 8,44% |
| 2017 | 10 289 | 2,19% |
| 2016 | 10 069 | 5,13% |
| 2015 | 9 578 | -0,24% |
| 2014 | 9 601 | 0,14% |
| 2013 | 9 588 | -6,86% |
| 2012 | 10 294 | -6,03% |
| 2011 | 10 955 | -3,36% |
| 2010 | 11 336 |