To date (2013-05-07) you have submitted 574 Suggested Edits for approval, 512 of which were accepted while 62 were declined. Back in Feb 2011, the reputation system was updated to award a suggestor with +2 reputation in the case of an approved Suggested Edit. This should put your tally of reputation accumulated via this method at +1,024.
Now, according to the way suggested edits work, you're only allowed 1,000 reputation in total for approved Suggested Edits. However, when posts are deleted, you lose the revision reputation. Here's a quick take on reputation associated with Suggested Edits (from the above post):
Can I earn reputation?
- When a suggested edit is approved, the user who suggested it gets +2 reputation. The regular daily reputation cap applies, and the total cap is 1,000. Like any other reputation, the +2 is deleted if the edited post is ever deleted.
- When a suggested edit is rejected, no penalty is given.
A quick aggregation of your reputation lists at least 484 edits still "visible" from non-deleted posts (out of around 579 post-related reputation earnings). While 484 visible, approved Suggested Edits drops you back to earning only 968 reputation, you may have reached the 1,000 rep-cap over all time (512 approved + 484 visible - 500 maximum ~ 500 posts = 1,000 reputation). Once you've reached this, there's no more bonuses from Suggested Edits.
This is just my guess...
While this may seem anti-climatic, continue to help improve the site!