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 | 73 575 | 0,87% |
| 2020 | 72 937 | -3,07% |
| 2019 | 75 249 | 6,13% |
| 2018 | 70 902 | 4,36% |
| 2017 | 67 939 | 7,04% |
| 2016 | 63 468 | 10,21% |
| 2015 | 57 590 | 0,03% |
| 2014 | 57 573 | 5,18% |
| 2013 | 54 737 | -0,74% |
| 2012 | 55 144 | -0,36% |
| 2011 | 55 340 | 0,97% |
| 2010 | 54 810 |