What is the annual change of GDP with a 20.5% GDP of EU in 2012?
CREATE TABLE "economic_growth" (
  "member_state_sorted_by_gdp" text,
  "gdp_in_s_billion_of_usd_2012" text,
  "gdp_pct_of_eu_2012" text,
  "annual_change_pct_of_gdp_2012" text,
  "gdp_per_capita_in_ppp_us_2012" real,
  "public_debt_pct_of_gdp_2013_q1" text,
  "deficit_surplus_pct_of_gdp_2012" text,
  "inflation_pct_annual_2012" text,
  "unemp_pct_2013_m7" text
);
SELECT "annual_change_pct_of_gdp_2012" FROM "economic_growth" WHERE "gdp_pct_of_eu_2012"='20.5%';