By Clare Nuttall in Glasgow In the 20 years since the first eight countries from Central and Southeast Europe joined the European Union (EU), their GDP per capita has close to doubled as a share of Germany’s GDP per capita, a stronger performance than other emerging markets of similar size. This represents what the European Bank for Reconstruction and Development (EBRD) describes as an ‘accession boost’ for the eight countries — Czechia, Estonia, Hungary, Latvia, Lithuania, Poland, the Slovak Republic and Slovenia — that enabled them to outperform other emerging markets. “EU accession led to r…