About some phrase in a news story: <br/><br/><a href='http://www.nytimes.com/2003/10/23/business/goodyear-tire-will-restate-earnings-dating-back-to-1998.html' target='_blank' rel='nofollow'>http://www.nytimes.com/2003/10/23/business/goodyear-tire-will-restate-earnings-dating-back-to-1998.html</a> <br/>"The Goodyear Tire and Rubber Company said on Wednesday that it expected to restate as much as $100 million in <span style="color:#ff0000;"><b><i>earnings dating back</i></b></span> to 1998 because of a series of accounting and billing errors."<br/><br/>Does "earnings dating back to 1998" mean 1) earnings received in 1998 alone, or 2) earnings received since 1998?