The world was overcome with grief, Wednesday, when Apple announced that their founder and former CEO Steve Jobs has passed away.

In 2004, Jobs had surgery to remove a rare tumor from his pancreas. Then in 2006, at the Worldwide Developers Conference, he appeared to some very thin, leading to widespread rumors of his failing health.

In 2008 at the same event, speculation continued and Jobs decided he didn't want to talk about it anymore and that it was a private matter. Beginning in January, 2009 Jobs took a six month leave of absence from Apple because of his health. In April of that year, Jobs received a liver transplant and was back at work in only a few months. He spent nearly 18 months at work before again taking a leave in early 2009.

Jobs did make appearances in March and June this year to announce the iPad 2 and iCloud respectively. Finally in August, he announced his resignation as CEO and Tim Cook took over. Jobs died Oct. 5, 2011.

Start the slideshow to witness how the health of Jobs deteriorated over the years.

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