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 | 53 759 | -16,73% |
| 2020 | 64 558 | -4,52% |
| 2019 | 67 615 | -10,52% |
| 2018 | 75 567 | 3,44% |
| 2017 | 73 054 | 11,50% |
| 2016 | 65 519 | -28,45% |
| 2015 | 91 570 | 6,67% |
| 2014 | 85 847 | 17,87% |
| 2013 | 72 832 | 14,58% |
| 2012 | 63 566 | 13,17% |
| 2011 | 56 168 | 1,36% |
| 2010 | 55 415 |