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 | 4 876 | 8,24% |
| 2020 | 4 505 | 3,44% |
| 2019 | 4 355 | 3,82% |
| 2018 | 4 195 | -1,74% |
| 2017 | 4 270 | -15,62% |
| 2016 | 5 060 | -5,79% |
| 2015 | 5 371 | 6,01% |
| 2014 | 5 066 | 9,16% |
| 2013 | 4 641 | -0,87% |
| 2012 | 4 682 | -2,70% |
| 2011 | 4 812 | -2,89% |
| 2010 | 4 955 |