Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27495 ( "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 )

### Question ###
What was the largest index the year/s forcible rapes numbered 1084?

### Accurate SQL ###

SELECT MAX("Index") FROM table_27495 WHERE "Forcible rape" = '1084'