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
| Datum | Wert | Ändern , % |
|---|---|---|
| 2021 | 1.022 | -8,35 % |
| 2020 | 1.115 | -1,04 % |
| 2019 | 1.127 | -4,02 % |
| 2018 | 1.174 | 2,60 % |
| 2017 | 1.145 | 2,62 % |
| 2016 | 1.115 | 7,58 % |
| 2015 | 1.037 | 7,92 % |
| 2014 | 961 | -9,09 % |
| 2013 | 1.057 | -1,27 % |
| 2012 | 1.070 | 13,04 % |
| 2011 | 947 | 2,20 % |
| 2010 | 926 |