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_71549 ( "Year" real, "Team" text, "Co-Drivers" text, "Class" text, "Laps" real, "Pos." text, "Class Pos." text )

### Question ###
What year did finish 1st in LMP1 class?

### Accurate SQL ###

SELECT AVG("Year") FROM table_71549 WHERE "Class" = 'lmp1' AND "Class Pos." = '1st'