CREATE TABLE "performance_indicators_for_nwsc_1998_201" (
  "1998" text,
  "2000" text,
  "2004" text,
  "2007" text,
  "2011" text
);

Question: What is the 2000 value if the 1998 value is 1.5?
SQL: SELECT "2000" FROM "performance_indicators_for_nwsc_1998_201" WHERE "1998"='1.5';

Question: What is the 2004 value if the 1998 value is 35?
SQL: SELECT "2004" FROM "performance_indicators_for_nwsc_1998_201" WHERE "1998"='35';

Question: What is the 1998 value if the 2000 value is 25?
SQL: SELECT "1998" FROM "performance_indicators_for_nwsc_1998_201" WHERE "2000"='25';

Question: What is the 1998 value if the 2007 value is 8?
SQL: SELECT "1998" FROM "performance_indicators_for_nwsc_1998_201" WHERE "2007"='8';

Question: What is the 2000 value if the 1998 value is 1.5?
SQL: SELECT "2000" FROM "performance_indicators_for_nwsc_1998_201" WHERE "1998"='1.5';

Question: What is the 1998 value if the 2011 value is 30.4?
SQL: SELECT "1998" FROM "performance_indicators_for_nwsc_1998_201" WHERE "2011"='30.4';