if you are using sql 2005 u r in luck....it maintains the versions...
try this command and you can see how many times a procedure created...
select * from syscomments c, sysobjects o
where o.xtype not in ('S', 'U')
and o.id = c.id and o.id = object_id(' ')
Prakash Heda
Lead DBA Team - www.sqlfeatures.com
Video sessions on Performance Tuning and SQL 2012 HA