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 | 409 | 16.83% |
| 2020 | 350 | -16.32% |
| 2019 | 419 | 3.88% |
| 2018 | 403 | -5.65% |
| 2017 | 427 | 9.04% |
| 2016 | 392 | 4.44% |
| 2015 | 375 | 16.16% |
| 2014 | 323 | 0.34% |
| 2013 | 322 | 38.46% |
| 2012 | 232 | 3.86% |
| 2011 | 224 | 10.40% |
| 2010 | 203 |