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Aaron Rodgers has been a big financial player in 2018. Stacy Revere/Getty Images

It's been a big year for Aaron Rodgers' bank account. In April, the Green Bay Packers quarterback purchased a stake in the NBA's Milwaukee Bucks and on Wednesday he agreed to an NFL-record four-year, $134 million contract extension "that could be worth up to $180 million in total money," according to ESPN's Adam Schefter.

The deal, which includes $103 million total in guarantees, would run through the 2023 season, according to Schefter. It means Rodgers will earn roughly $33.5 million annually.

The 34-year-old is considered among the best quarterbacks in the NFL and an all-time great. He is a six-time Pro Bowler and a Super Bowl champion.

While it is difficult to assess anyone's net worth, Celebrity Net Worth lists Rodgers' wealth at $70 million, which seems to be a very conservative figure given his contract and endorsement history.

According to Spotrac, Rodgers has accumulated $137.1 million in cash earnings since entering the NFL in 2005, while his salary over 13 seasons totals $66.4 million. He started out by signing a five-year, $7.7 million deal that included $5.4 million in guaranteed money which had the potential to pay him as much as $24.5 million if all incentives were met.

In October 2008, Rodgers signed a six-year, $65 million contract extension through the 2014 season. In April 2013, the Packers and Rodgers agreed to a five-year, $110 million contract extension making him the highest paid player in NFL history.

In 2017, Rodgers made $12.55 million in salary and $13.3 million in total cash.

According to a Forbes report in October 2015, Rodgers has received $7.5 million in endorsement deals, which include Adidas, State Farm, Ford and Prevea.

Rodgers' investment in the Bucks could produce a big return. The Bucks have reached the playoffs in back-to-back seasons and are primed to remain one of the top teams in the Eastern Conference with star forward Giannis Antetokounmpo and other young stars.

"Aaron is a winner, a Wisconsin icon, and we are honored to welcome him to our partnership group of the Milwaukee Bucks," the Bucks' ownership group said in a statement in April. "With our team in the playoffs and our new world-class arena opening this fall, it's an exciting time for this city and the Bucks. We are thrilled for Aaron to be with us."

Rodgers is sharing the team with majority owners Wesley Edens, Marc Lasry and Jamie Dinan. The Bucks were purchased from former U.S Sen. Herb Kohl in 2014 for $550 million. The club is valued at a little over $1 billion, according to Forbes.