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 | 1 198 | 4,64% |
| 2020 | 1 144 | 1,36% |
| 2019 | 1 129 | 4,97% |
| 2018 | 1 076 | 2,17% |
| 2017 | 1 053 | 0,53% |
| 2016 | 1 047 | 0,74% |
| 2015 | 1 040 | 0,29% |
| 2014 | 1 037 | -0,36% |
| 2013 | 1 040 | -0,54% |
| 2012 | 1 046 | -5,29% |
| 2011 | 1 104 | -5,20% |
| 2010 | 1 165 |