Task: Question Understanding
Input (English): Passage: Modern Clallam County is generally regarded as a competitive area politically. In the United States presidential election, 2016, Donald Trump won with 46.7% of the vote, compared to 44.0% of the vote for Hillary Clinton. In the United States presidential election, 2012, Barack Obama narrowly won with 48.4% of the vote, compared to 48.0% of the vote for Mitt Romney. In the United States presidential election, 2008, Democratic Party (United States) Barack Obama won the county with 50.5% of the vote, compared to 47.2% for Republican candidate John McCain. However, Republican George W. Bush carried Clallam twice, defeating John Kerry by 51.3% to 46.3% in United States presidential election, 2004, and Al Gore by 50.4% to 42.7% in United States presidential election, 2000 (although Bush lost Washington (state) as a whole both times). Clallam County is a bellwether, voting for the nationwide winning candidate in every presidential election from United States presidential election, 1980 onward.
Question: During which election year did the winning candidate receive the highest percentage of votes in Clallam County?
Output (English): date