The city struggled to make a transition to new industries. During the second half of the 20th century, the city's recessions were longer than the national average. The exodus of defense companies (such as Lockheed Martin, formed from the merger of the Lockheed Corporation and Martin Marietta in 1995) and the electrical-manufacturing industry played a major role in Utica's recent economic distress. From 1975 to 2001, the city's economic growth rate was similar to that of Buffalo, while other upstate New York cities such as Rochester and Binghamton outperformed both.