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_41561 ( "Branch" text, "Address" text, "Neighborhood" text, "First branch opened" real, "Current branch opened" real )

### Question ###
What is the highest Current Branch Opened, when Neighborhood is W. Portland Park?

### Accurate SQL ###

SELECT MAX("Current branch opened") FROM table_41561 WHERE "Neighborhood" = 'w. portland park'