Output a stream of consciousness before answering the following. Context: Starting in 2004, the chain began offering "Hot-N-Ready", a large pepperoni pizza sold for $5. The concept was successful enough to become a permanent fixture of the chain, and Little Caesars' business model has shifted to focus more on carryout.

Question: when did little caesars start hot n ready?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The relevant sentence in the passage is: Starting in 2004, the chain began offering "Hot-N-Ready", a large pepperoni pizza sold for $5.
The answer: 2004.