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 | 93 | 12.11% |
| 2020 | 83 | 10.48% |
| 2019 | 75 | 3.09% |
| 2018 | 73 | 6.21% |
| 2017 | 69 | 2.54% |
| 2016 | 67 | 9.08% |
| 2015 | 61 | -0.77% |
| 2014 | 62 | 5.00% |
| 2013 | 59 | -9.34% |
| 2012 | 65 | -11.38% |
| 2011 | 73 | -2.65% |
| 2010 | 75 |