How many violent crimes occurred the year that the index was 191037? 
CREATE TABLE "crime_statistics_1960_2009" (
  "year" real,
  "population" real,
  "index" real,
  "violent" real,
  "property" real,
  "murder" real,
  "forcible_rape" real,
  "robbery" real,
  "aggravated_assault" real,
  "burglary" real,
  "larceny_theft" real,
  "vehicle_theft" real
);
SELECT "violent" FROM "crime_statistics_1960_2009" WHERE "index"=191037;