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_name_71 (goals VARCHAR, current_club VARCHAR, debut_year VARCHAR)

### Question ###
How many goals were achieved when Chievo was the club and the debut year was before 2002?

### Accurate SQL ###

SELECT COUNT(goals) FROM table_name_71 WHERE current_club = "chievo" AND debut_year < 2002