Twitter has put together a web page showcasing tweets that generated the most retweets in 2012, as well as some of the biggest conversations on the social media network this year.

U.S. President Barack Obama posted, “Four more years,” with a picture of him hugging his wife just before he took to the stage to give his victory speech following the Nov. 6 election.

The tweet was retweeted more than 810,000 times in more than 200 nations, becoming the most retweeted post of 2012 and the most retweeted post ever on Twitter.

The second most retweeted post was by Canada’s very own Justin Bieber. He paid tribute to six-year-old girl Avalanna Routh, who died from a rare form of brain cancer in September.

His “RIP Avalanna. I love you” was retweeted more than 220,000 times.

Twitter also highlighted some of the biggest conversations of the year around a single event, including the Summer Olympics, the U.S. election and Euro 2012.

The 16-day Summer Olympics generated 150 million tweets. The closing ceremony received 116,000 tweets a minute and Usain Bolt’s 200-metre race win garnered 80,000 tweets a minute.

The U.S presidential debates generated 10 million tweets with 31 million tweets being sent about the election on Election Day.

During the final Euro soccer match between Spain and Italy, Juan Mata’s goal ignited 267,200 tweets a minute. Other heavily tweeted moments include Mario Balotelli’s second goal for Italy against Germany and Portugal’s loss against Spain in the semi-final.

You can view the 2012 tweets on Twitter here.