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 | 18.408 | 5,60% |
| 2020 | 17.432 | -0,07% |
| 2019 | 17.444 | 0,97% |
| 2018 | 17.277 | 3,86% |
| 2017 | 16.634 | 10,67% |
| 2016 | 15.030 | -7,27% |
| 2015 | 16.209 | 6,30% |
| 2014 | 15.249 | -0,15% |
| 2013 | 15.272 | -12,76% |
| 2012 | 17.505 | 1,13% |
| 2011 | 17.309 | -7,75% |
| 2010 | 18.763 |