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
| Fecha | Valor | Cambiar , % |
|---|---|---|
| 2021 | 2.803 | -13,24 % |
| 2020 | 3.231 | 3,84 % |
| 2019 | 3.111 | -0,66 % |
| 2018 | 3.132 | -4,17 % |
| 2017 | 3.268 | -1,43 % |
| 2016 | 3.316 | -2,60 % |
| 2015 | 3.404 | 0,83 % |
| 2014 | 3.376 | 0,10 % |
| 2013 | 3.373 | 1,98 % |
| 2012 | 3.307 | 4,51 % |
| 2011 | 3.164 | 3,60 % |
| 2010 | 3.055 |