Original sentence: Global competitiveness indices, European Union Innovation Scoreboard, the miserable rating levels had not changed in the following year as well ) as well as severe emigration have been claimed to prove the negative impact of internal devaluation on the development of the human resources and potential GDP (whose performance can be measured by the notable inflation rate)
Edited sentence: Global competitiveness indices, European Union Innovation Scoreboard, the miserable rating levels had not changed in the following year as well ) as well as severe emigration proves the negative impact of internal devaluation on the development of the human resources and the potential GDP (whose performance can be measured by the notable inflation rate)