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 | 1.640 | 61,92 % |
| 2020 | 1.013 | 0,84 % |
| 2019 | 1.005 | 8,49 % |
| 2018 | 926 | -2,32 % |
| 2017 | 948 | 6,24 % |
| 2016 | 892 | -4,89 % |
| 2015 | 938 | -0,45 % |
| 2014 | 942 | 12,22 % |
| 2013 | 840 | -4,44 % |
| 2012 | 879 | -8,60 % |
| 2011 | 961 | 3,51 % |
| 2010 | 929 |