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_27146868_1 ( greek_national_account VARCHAR )

### Question ###
What is the greek national account when 1997 is 6.1?

### Accurate SQL ###

SELECT greek_national_account FROM table_27146868_1 WHERE 1997 = "6.1"