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 | 1 022 | -8,35% |
| 2020 | 1 115 | -1,04% |
| 2019 | 1 127 | -4,02% |
| 2018 | 1 174 | 2,60% |
| 2017 | 1 145 | 2,62% |
| 2016 | 1 115 | 7,58% |
| 2015 | 1 037 | 7,92% |
| 2014 | 961 | -9,09% |
| 2013 | 1 057 | -1,27% |
| 2012 | 1 070 | 13,04% |
| 2011 | 947 | 2,20% |
| 2010 | 926 |