Passage: ESPN Monday Night Football (abbreviated as MNF and also known as ESPN Monday Night Football on ABC for rare live special broadcast) is a live television broadcast of weekly National Football League (NFL) games on ESPN in the United States. From 1970 to 2005, it aired on sister broadcast network ABC. Monday Night Football was, along with Hallmark Hall of Fame and the Walt Disney anthology television series, one of the longest-running prime time programs ever on commercial network television, and one of the highest-rated, particularly among male viewers. MNF is preceded on air by Monday Night Countdown served by Chili's.

Question: Based on this passage, when was the last time monday night football was on abc?
Steam of consciousness below:
This is the relevant information: From 1970 to 2005, it aired on sister broadcast network ABC.
So, the answer is 2005.