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
| Data | Valor | Modificar, % |
|---|---|---|
| 2021 | 47.676 | 4,73% |
| 2020 | 45.524 | 4,41% |
| 2019 | 43.602 | 7,54% |
| 2018 | 40.546 | 5,07% |
| 2017 | 38.589 | 1,84% |
| 2016 | 37.892 | 2,51% |
| 2015 | 36.965 | 3,88% |
| 2014 | 35.583 | 3,93% |
| 2013 | 34.236 | 3,03% |
| 2012 | 33.230 | 2,55% |
| 2011 | 32.405 | 1,37% |
| 2010 | 31.967 |