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_174266_6 ( two_years INTEGER, unknown INTEGER )

### Question ###
If unknown is larger than 1.0, what is the maximum two year amount?

### Accurate SQL ###

SELECT MAX(two_years) FROM table_174266_6 WHERE unknown > 1.0