Qual é a variação anual do PIB com um PIB da UE de 20,5% em 2012?
CREATE TABLE table_1598533_8 (annual_change__percentage_of_gdp__2012_ VARCHAR, gdp__percentage_of_eu__2012_ VARCHAR)
SELECT annual_change__percentage_of_gdp__2012_ FROM table_1598533_8 WHERE gdp__percentage_of_eu__2012_ = "20.5%"