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 | 5,561 | 36.04% |
| 2020 | 4,088 | 10.29% |
| 2019 | 3,706 | 0.82% |
| 2018 | 3,676 | 2.97% |
| 2017 | 3,570 | -1.71% |
| 2016 | 3,632 | 0.39% |
| 2015 | 3,618 | 2.24% |
| 2014 | 3,539 | -5.14% |
| 2013 | 3,730 | 0.63% |
| 2012 | 3,707 | 1.23% |
| 2011 | 3,662 | 1.60% |
| 2010 | 3,604 |