Database: aan_1
Question: How many papers does Stanford University have between 2000 and 2009?
SQL:
SELECT count(DISTINCT T1.paper_id) FROM Paper AS T1 JOIN Author_list AS T2 ON T1.paper_id  =  T2.paper_id JOIN Affiliation AS T3 ON T2.affiliation_id  =  T3.affiliation_id WHERE T1.year  >=  2000 AND T1.year  <=  2009 AND T3.name LIKE "Stanford University"