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_12720275_1 ( rank__csa_ VARCHAR )

### Question ###
What is the 2007 estimate when the rank (csa) is 4

### Accurate SQL ###

SELECT 2007 AS _estimate FROM table_12720275_1 WHERE rank__csa_ = "4"