>total population change in EU countries

The figures I cited are for GDP per capita, which accounts for population growth. Moreover immigration should have the opposite effect of depressing per-capita GDP, because immigrants typically take lower skilled jobs, dragging overall productivity down. So if anything, the figures are artificially depressed, not inflated.

You should read down that table a bit. Sure the Spanish economy had higher growth rates the last couple of years. The way they managed to have a higher rate was to have the economy shrink by 8% in 2023. So according to my math, the estimated size of the Spanish economy in 2026 is about the same as the 2023 Spanish economy (within 1%). Hard to claim that as a win.

Technically you can say that they have been in a depression for the last 4 years and counting as their functional growth rate (accounting for inflation of the Euro) is negative over that period (down about 10% inflation adjusted).