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
| التاريخ | Value | تغيير , % |
|---|---|---|
| 2021 | 107 | -34.52 % |
| 2020 | 164 | -7.31 % |
| 2019 | 177 | 71.12 % |
| 2018 | 103 | 10.71 % |
| 2017 | 93 | 7.77 % |
| 2016 | 87 | 16.05 % |
| 2015 | 75 | -1.78 % |
| 2014 | 76 | 14.59 % |
| 2013 | 66 | 9.36 % |
| 2012 | 61 | 12.47 % |
| 2011 | 54 | -4.47 % |
| 2010 | 56 |