What is the 2009 first time percentage of the exam with a 2010 first time percentage of 88%?
CREATE TABLE "passing_rates" (
  "exam" text,
  "2006_first_time" text,
  "2006_all" text,
  "2007_first_time" text,
  "2007_all" text,
  "2008_first_time" text,
  "2008_all" text,
  "2009_first_time" text,
  "2009_all" text,
  "2010_first_time" text,
  "2011_first_time" text,
  "2012_first_time" text
);
SELECT "2009_first_time" FROM "passing_rates" WHERE "2010_first_time"='88%';