What is the annual change of GDP with a 20.5% GDP of EU in 2012?
create table table_1598533_8 (annual_change__percentage_of_gdp__2012_ varchar, gdp__percentage_of_eu__2012_ varchar, PRIMARY KEY (annual_change__percentage_of_gdp__2012_))
select annual_change__percentage_of_gdp__2012_ from table_1598533_8 where gdp__percentage_of_eu__2012_ = "20.5%"