For those who can't read Portuguese:
Data from Bank of Portugal
Nearly 290 million notes destroyed last year
Controlled money
was not offering any quality anymore.

,

and

are the ones which deteorate more frequently.
In only one year, the Bank of Portugal removed from circulation 289 million notes, a number which corresponds to 40 per cent of the ones processed in the gathering procedure.
The ammortized notes, a technical term for 'destroyed notes', did not have enough quality to continue on the market. Many have deteorated due to contact with water, sweat or have been teared. But many others appeared vandalized: burned, scribbled or with safety measures destroyed.
This data from Bank of Portugal is from 2005 and shows that, comparing with the previous year, the number of destroyed notes in the Carregado complex - where notes are produced, seleceted, evaluated and (if necessary) destroyed is made - raised by 2 per cent.
The largest ammound of notes that had to be ammortized are of lesser facial value:

(72%),

(33%) and

(32%). "These indicators, which reveal a higher deteoration of the smaller notes, can also be useful to show that in Portugal these notes are the ones which circulate more and be an economical indicator of the nation", explains João Matela, from the Bank of Portugal PR.
On the other hand, he adds, the high degree of notes destruction does not leave doubts that "the quality criteria are very high".
João Matela has also said that in the last year something like 727.9 million notes have passed through the selecting systems of the Carregado complex. This is not, however, the total value of notes circulation in the nation. "Only notes that various banks sent to Bank of Portugal, which happens any time an institution has what they consider to be too much money."
Once the notes get to Carregado their quality is assessed. Firstly, false ones are detected and eliminated. Then those deteorated for whatever reason are removed. "Notes full of dirt, some scribbled, others burned and many others that could have been damaged by ATMs", adds João Matela.
Corroded by drugs
in Germany (as we had already pointed out
here 
)
Recently in Germany a large ammount of €uro notes appears to be desintegrating. After several laboratorial tests the reached conclusions point to the problem being the fact that those notes have been used to inhale drugs. The remains, blended with sweat, have created an acid which corroded the notes, which would get partially destroyed.
Bank of Portugal does not have enough elements which would allow it to confirm or deny if similar cases have already been detected in Portugal, but Judiciary Police (PJ), who through the Scienitfic Police Laboratory is the competent authority to analyse such situations, refers that no note in these conditions has been detected.
According to a PJ investigator contacted by PÚBLICO there is the assurance that many notes end up being destroyed (part of their security marks) by being used in drugs consuming.
The Police notes that many notes, specially new ones, are used to inhale cocaine, while others, with burned edges, are used by heroine consumers when inhaling that substance, which is burned.
De férias por período indeterminado...