His two terms saw widespread economic prosperity except for a minor recession in 1958. In his farewell address to the nation, he expressed his concerns about the dangers of massive military spending, particularly deficit spending and government contracts to private military manufacturers, which he dubbed 'the military–industrial complex'. Historical evaluations of his presidency place him among the upper tier of American presidents. Eisenhower was a golf enthusiast later in life, and he joined the Augusta National Golf Club in 1948. He played golf frequently during and after his presidency and was unreserved in expressing his passion for the game, to the point of golfing during winter; he ordered his golf balls painted black so he could see them better against snow on the ground.