<|system|>
Bloomberg L.P. is a privately held financial, software, data, and media company headquartered in Midtown Manhattan, New York City. It was co-founded by Michael Bloomberg in 1981, with Thomas Secunda, Duncan MacMillan, Charles Zegar, and a 12% ownership investment by Bank of America through their brokerage subsidiary Merrill Lynch.</s>.
<|user|>
From the passage provided, extract when Bloomberg L.P. was founded
<|assistant|>
Bloomberg L.P. was founded in 1981