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 museum (open_year VARCHAR)

### Question ###
How many museums were opened after 2013 or before 2008?

### Accurate SQL ###

SELECT COUNT(*) FROM museum WHERE open_year > 2013 OR open_year < 2008