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 | 55 774 | 7,32% |
| 2020 | 51 971 | -0,14% |
| 2019 | 52 042 | 3,23% |
| 2018 | 50 411 | 5,04% |
| 2017 | 47 991 | -0,64% |
| 2016 | 48 302 | -0,60% |
| 2015 | 48 596 | 1,76% |
| 2014 | 47 754 | 1,07% |
| 2013 | 47 250 | -0,42% |
| 2012 | 47 451 | -1,20% |
| 2011 | 48 030 | 1,35% |
| 2010 | 47 392 |