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
| 日付 | 値 | 変更 , % |
|---|---|---|
| 2021 | 434 | 6.88% |
| 2020 | 406 | 2.35% |
| 2019 | 396 | 12.65% |
| 2018 | 352 | 2.94% |
| 2017 | 342 | 32.91% |
| 2016 | 257 | -5.61% |
| 2015 | 273 | 17.86% |
| 2014 | 231 | 7.28% |
| 2013 | 216 | 3.59% |
| 2012 | 208 | -2.59% |
| 2011 | 214 | -13.64% |
| 2010 | 247 |