Pete the Pizza Man produced $87,000 worth of pizzas in the past year. He paid $39,000 to employees, paid $11,000 for vegetables and other ingredients, and paid $5000 in taxes

He began the year with ingredient inventories valued at $1000, and ended the year with inventories valued at $2000. What was Pete's (and his employees') total contribution to GDP this year?

$87,000 - $11,000 paid for intermediate goods + $1000 change in inventories = $77,000.