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 | 62 489 | 2,99% |
| 2020 | 60 675 | 5,13% |
| 2019 | 57 713 | 4,97% |
| 2018 | 54 979 | 1,34% |
| 2017 | 54 254 | -0,67% |
| 2016 | 54 618 | -0,35% |
| 2015 | 54 810 | -3,84% |
| 2014 | 57 001 | -1,79% |
| 2013 | 58 038 | -3,66% |
| 2012 | 60 241 | -2,78% |
| 2011 | 61 961 | -3,38% |
| 2010 | 64 129 |